Last week we tried an inset 30 in the abdomen and had to pull it pretty quickly because it was hurting. We also tried a quickset 6mm in the rear and that worked well. We are going back inon Fri to have someone evaluate the abdomen again to see what would be a good fit so that we can use it along with the rear. I am hoping you guys can share what has worked for this with small kiddies with very little body fat so that I can be better informed for our appointment. At this point we can't even pinch enough in DDs abdomen to do shots. Any pros cons to any of the sets? Especially for a very active child (forgot to mention thighs are not an option because if this too) Thank you in advance, D.