When you say LR, are you talking about the 2.1 - 2.4 Ohm, or the 1.7 - 2.0 Ohm? I think there are 2 levels of LR, although I am not sure if that is the CE4 or the Vision Stardust that offers the much lower resistance version. I would just mention in my experience, anything less than 2 Ohms should not be vaped higher than 3.7 volts, or it tastes burnt to me. Other people may have different experiences, and your experience may be different since I think you said you are vaping tobacco flavored e-liquids, I vape fruit or sweet coffee beverage flavored e-liquids.
I have some of both clearomizer types, because I didn't realize they were different, and I ended up buying from 2 different vendors (the CE4 and the Vision Stardust, look the same but made by different manufacturer/supplier). It never occurred to me until I started reading posts here why some of my clearomizers had a tighter draw, and others a looser draw. Apparently a CE4 and Vision Stardust are not created entirely equally.
I use a KGO, it has a similar (almost identical) adapter for attaching atties, cartos, and clearos, as an eGo does. I have also tried using these clearomizers on a generic version of the Lavatube, a variable volt tube mod without the Lavatube label and trademark. I do not know if it is being manufactured by the same factory/supplier as the original Lavatube, but I have heard they perform identically. I actually didn't notice any performance improvement vaping a LR (2.1 - 2.4 Ohm) CE4 or Stardust at higher voltages than my 3.7 volt KGO. Anyway, the Variable Voltage Tube Mod will monitor the rating of anything you attach to it, and if you apply more volts than it can safely handle, it automatically drops to 3.7 volts to protect you from blowing up your attachments.
I found my Vision Stardust tasted better on my KGO at 3.7 volts, than they did on my Tube Mod at 4.0 - 4.2 volts producing more heat. I also vape e-liquids that don't taste like tobacco, and are fruit and sweet coffee beverage flavors, so those tend to taste a little burnt when they get too hot. I lift my PV level or higher, and make sure that liquid is always touching the wicks, I have experienced dry hits if the wicks are allowed to rise above the e-liquid exposed to air. I have heard some people complain, because they like to hold their PV down over their chin while they vape, instead of holding it level. If you hold your PV level, and your Stardust clearomizer is at least between 1.0ml - 1.2ml full, the liquid will flow back far enough to cover the wicks. Sometimes when I haven't felt like topping the clearo yet, I have let the liquid level get lower than that, which meant I had to lift my PV really high before the wicks had liquid covering them. Doing this can rarely cause liquid which has condensed in the drip tip to spill into my mouth, giving me a couple drops of intense flavor in my mouth, and more nicotine at once than I prefer.
When I open a clearomizer from the package and fill it, I have never prepared it in advance as far as cleaning and rinsing, this is the first I have heard of that before. I do let them wick for at least 10 minutes before I start vaping, so they don't start out too dry. That has always worked ok for me, but it couldn't hurt to rinse it and let it dry either, if you are very tidy about that sort of thing, and have the extreme patience and time.
I only put one flavor in each one. So far, I have only used them for 6-8 weeks, and only recently noticed that one of several was still getting hot, but making less flavor and vapor. Until tonight, I did not know that cleaning and dry burning could lengthen their life, and make the flavor and vapor come back. I know the coil still gets hot, I can feel it, it just isn't making the level of flavor and vapor I got when I poured the liquid into a brand new clearomizer.
I found a few videos on YouTube on getting the tube out, but I didn't see them put it back in, I wonder how you can tell it's really in there? I wonder if it's worth the extra trouble now that they make CE5s with replaceable innards? The reviews I have read so far are very promising.
Something I do every time I top off these clearomizers, and before I vape after they have been sitting for a while, I turn them over and over and watch the air bubble mix the liquid at the bottom, with the liquid at the top. If you have any clear liquids, you will notice they get a little brown from contact with the coil, and probably creating carbon buildup. If you let the liquid settle at the bottom, I think they lose their flavor, I think the flavor lasts longer if you constantly mix the liquid at the top with the liquid that settles at the bottom. I vape several ml a day, probably more than 5 - 10ml of e-liquid, I am not only as much a chain vapor, as I have too much free time while I am sick and not working, and don't sleep enough. I can be totally incorrect about the flavor settling when the liquid touches the coil that doesn't turn into vapor, but I just noticed that when I added new e-liquid, the stuff at the top was clear, and the stuff at the bottom had a slight brown tint. I mix it all together so that the fresh flavor is evenly distributed, tilting and rolling the clearomizer over and over again.
For me, once I tried a clearomizer, I couldn't go back to cartomizers ever again. Clearomizers are as close as I have gotten to the flavor of dripping on an atomizer, without carrying a bottle of liquid around with me, and counting drops and being careful not to miss the atomizer or get liquid somewhere it doesn't belong.
