I've started to convert over to the carto/tank system. I've got 3 standard length IB tanks that I just fell in vape with. (Sorry I don't fall in love unless it's warm and breathing flesh.) I've been using standard 35mm length LR and also SR boge laser drilled cartos that I got from electronicstic.com. The reason I use two different resistances is I use em on two different APV's. Any body got an idea of another supplier for the laser drilled cartos. I don't know if the smoktec DC cartos will work in the standard length tanks or not. I really don't like the idea of punched cartos even though I've never tried them. I've tried to punch my own and I even tried to slot em. My eyes arn't good enough for that. I can't tell when I get em right and ruin all of em. The saddle punch, well that's another story. The stem is to soft for the SS cartos and just bends. I tried it and never got a hole punched. I'm lazy so I'll just buy em. Suggestions? Please?