Drew - Thank you for the videos. They showed me that my Xhaler end cap properly touches the set screw when the cap is all the way on.
Previously I wasn't able to tell a difference with the cap tight or loose. I THINK I was just testing with ejuice that doesn't vape well at high voltage. Basically, the settings at 5 or 6 volt heated up the juice very quickly giving me vapor that was too hot for me and somewhat tasteless.
A couple of mornings ago I had loaded some Hilton tobacco juice (not one I got from you) into my Xhaler and left for work. It was a very cold morning so my Xhaler got very cold before I vaped on it - I'd been vaping another PV when the juice ran low, and so I picked up my now-chilly Xhaler. The cap was tight, I got tons of vapor from it and it tasted great. So I loosened the cap and took a second puff. Still good taste and vapor, but definitely not as good as it was with the cap tight. Fairly subtle difference, tho, but definitely there.
Since then I've tried the Xhaler with some of your HV juices, and yes, I can tell the difference as long as I haven't been vaping so much already that almost all juice starts to become tasteles - I'm a heavy vaper.
Since I originally couldn't taste a difference between 5v and 6v and quite a few people posted saying similar things, I didn't bother trying to test a difference, thinking either the Xhaler didn't really have a difference or that possibly my Xhaler was faulty.
But your high-def video and the messages in that thread suggested checking that the set-screw protruded above the top edge of the tube. I couldn't really tell just by looking at it, but when I took one of the 'dental tools' (free gifts you sent me with other orders) and set the 'thin' part on the top edge of the tube (batteries out, of course) and slid it along so it touched the top of the set screw, when I pushed that dental tool further toward the opposite edge of the tube, it didn't touch the tube edge. So the set screw WAS protruding above the tube edges.
That made me curious enough to try the loose/tight cap settings again. But since I had one of the 'cheap' juices in my cart that I'd been vaping at 3.7 volts, I still couldn't tell the difference when I moved the atty/cart to the Xhaler with the two 3v batts in it.
So I finally tasted the difference the next morning using a Hilton juice on a very cold Xhaler and tried the tight/loose cap again. VOILA!
So I won't need to phone you - I probably wouldn't have been able to 'understand' without the visual aids.
But now I'm VERY happy vaping 'good' juices at 5volts and understand what so many other people had been talking about - 5v IS the sweet spot!
Now I can tell the difference between 5v and 6v on the Xhaler providing it's a juice that doesn't immediately get 'too hot', and your HV juices and some others I own will taste good at 6v on any of several PVs I have, but they definitely are better at 5v on the Xhaler, the only mod I own that offers 5v.
Thanks again, Drew!