oi vey,yah'll goin over the top on this one,yes old rocky singles leak from being warped when rebuilt and all that,well i got this tip from an old timer,its cheap and work like a charm. take the top off,and get the tube of vasoline out of the medicine cabinet,carefully smear a bead of vasoline around the gasket keepin it towards teh outside of it,put the top back on,and 8 times out of 10 it works.