If you have trouble with that stupid cube thing you can "CAREFULLY" grab the piston with a Channel Locks or a pipe wrench... Gotta be REAL careful to grab at the very end,,, being SURE not to grab it where the seal rides... MUCH better choice,,, get one of the compressors that have a crank that turns the piston AND compresses the piston... Any Auto Parts Store should have a loaner,,, OR they are pretty cheap to buy...
GOD!!! I HATE those cubes!!!
Tom B...