Thanks for the review! Some of the instructions for these stated it needs 12 lbs of air to run, really an encouragement that yours runs on 2 lbs or less.
I'm amazed at this thing! I've been mucking around with it all Sunday afternoon.
Yes, my first thought when I read 12lb min air pressure was there using to strong a spring holding the tension on Cylinder....you made a new screw and perhaps you set tension to a better value upon re assembly.