Hi, I'm new to the forums and hope I can get some help! My lactation consultant sold me the Medela temporary SNS device (long story, but I have been having issues BF my DS - have to use a nipple sheild, DS gets frustrated when he doesn't get milk quickly, etc.). It seems like it would work great, but either everything spills out or nothing comes out of the tubing at all. I just tried to use it for a feeding and a little formula came out from me "priming" it, but then nothing at all. I tried sucking on the tube and I couldn't get anything out, so I don't know how my baby is supposed to! What am I doing wrong? I am on the verge of having to give up BF and would really like this to work!! I would really appreciate any advice from someone who has used a SNS device before - I figure there must be some trick to getting them to work.