hey guys, I've got two provari's. it seems like I'm burning cartos in my tank up left and right or so they state and getting almost no vapor from one unit. this info is without tanks and just the cartos themselves and the same voltage on both units. I'll call them by number to not confuse. #1 is just over two months old and #2 is about a month. on #1 i have to tighten the carto down tight (cant fit a filler gauge between the bottom of the carto and top of the vari) it seems and its killing the air flow and giving off very very little vapor. take that same carto and put it on #2 and there's a gap between the base of the carto and vari and has some wobble(good vapor). if i tighten it down till no wobbles (thinnest filler gauge fits in) i can get great vapor from it. now take that carto that i was getting great vapor on from #2 and put it on #1 and i get the op code and it wont fire. pull the center pin out some and i get op or e1 code from it. iv burnt up seven cartos and almost a bottle juice just doing the test with the feeler gauges to see what was diffrent between the two units with vapor included. please help as I'm just 6 days shy of 3 months analog free and I'm about to break down and buy a pack as mines unit #1 and the fiancee's is #2.