My Boge cartos stick up a bit from my tank. it's hardly noticeable after you put a drip tip in. If the flavor is muted, CRANK IT UP. Don't throw any of them away. You may get other PVs later and those tank can be used with some of the more powerful PVs with little muting of flavor.
'1pc. drip tip (I recommend using one of the Big Belly Drip tips to prevent the tank from sliding up.)'
Yes, I've got one of these tanks... slides all over the place and it'll pull right off of the carto and you'll have juice everywhere :/ I've got one in these nice black caps, but I hate to use it because the tank slips off of the carto no matter how many times I've replaced the o-rings.
Since they suggest the bigger drip tip, try greasing it up with your juice and then try to put it in the carto.
If you decide to stick with carto tanks, search for some tanks with grommets, they have a snugger fit and won't slip right off. Boge cartos are also the cheapest I have found, punched or unpunched out of China from HealthCabin. If you can find better deals in the US, grab them. I pay $45.00 for 50
Pre-Punched Boge 510D Cartomizers.
This is where I got all of my tanks, they are now closed, but their stock will be going to another store, so they'll update the site when it does. Decide if you like the looks of them and then wait it out:
http://www.valleyvapes.com/