bladder pinch in part

Hello,
I’m working on a bladder molded tube, and am having problems with the sleeve getting bunched up. I’ve tried different size bladders, sleeves, and pressures (This one was done with 2X 30 oz glass sleeve, and 11 oz glass sleeve at 55 psi with a 1" bladder in a 1.2-1.4" Dia. glass mold) with no “aha” moment yet. Wondering if anyone has any insight…
Here is a pic of what is going on: