Doesn't that and all this defeat the purpose of using a pressure bleeder?!?! I have one; never worked worth a crap with the clamp-on lids/worked ok with screw-on lids. The seals dried out, now it sits in the cabinet. Don't miss it at all.
Vacuum hand pump to prime, bong bottle hung above the brake piston, send it.
I'm not impressed with the pressure bleeder either