Update: Okay you guys, I just knew something HAD to be wrong with all the trouble I've been having just in a week with 4 attys on this passthrough. Well tonight after my brand new atty started pulling super hard, I thought okay, for sure, this can't be right. So I did switch to the other passthrough I ordered from the same company and noooooooooo problems, drawing nice and smooth. So I have let the company know about this. I now know it was not my attys. So when my other 3 dry out by tomorrow afternoon sometime, I'm going to prime them and try them again on this new passthrough to see if the passthrough killed them or if it was just the bad passthrough making them draw so hard. I just knew something was not right. I will keep you posted on if the other 3 will work again once they are dried out.