thanks, you answered all my questions perfectly. but i have one more (sorry :wink:) what is the actual bolt? from what i can see its another piece of 3/4in pvc that locks into the shell. and whats the whole part about the 3/4x1" bushings? and do you have the actual lengths of the pipes? thank you so...

oh yea how is this air tight and how does the air tank attach

The only thing i don't really get is the part that explains how the bolt is moved and where the handle for the bolt is screwed in