I think this might be another case of the wrong type of oring. I had Teflon ones with my carriers (probably cause I ordered the wrong type). I just put a poly one in and will do more testing later. Had Yankee tix last night. Does anyone know the size and type of the small oring on top of the ULT? I think it's a 003. I'm not sure if it's Teflon or poly? Thanks again guys.