So I tried to search through other posts but just ended up more confused. I'm still kinda new at this (bought my first PV in 2009 but stopped using it for a while and just started back 10 days ago). Right now I have a 901. I just bought an Ego with blank cartos to refill with the juice I have. Problem is...I have no idea how to get the juice in the things. With the carts for the 901 and the regular carts for the Ego I can just drop a few drops onto the filler and be done. I don't see anyway to open the carto to get to the filler to drop liquid in. I read a few people talking about using syringes but I really don't wanna do all that. I also have read on the condom method, but the rubber tip that comes on the carto doesn't look like it would hold the amount that would fill the carto. So yeah, I'm totally confused and super sad about having a new toy I can't play with because I can't figure out how to fill the thing. Any help much appreciated!!