Randy7126:
You say you’re small. HOW small? Did you follow gprent’s advice in the thread /forum/showthread.php?t=82793?
Why are you pumping at 5 inHg? Have you tried pumping at a lower level of vacuum? Try pumping at a very low level of vacuum for the first part of your session, until you’re solidly packing the base of the cylinder, and increase the vacuum gradually after that.
There’s no harm in having some loose scrotal skin pulled into the cylinder, as long as it isn’t painful. Pulling a testicle in, now THAT hurts.
Another thing you can try is a loose wrap around your scrotum at the base of the penis. That may lessen the tendency to pull scrotal skin into the tube. That can be the form of a strip of soft cloth, or something like a ball stretcher.