RE: Tower 75 rpm figures?
You have to push the carb down hard enough to seat the o-ring. That is the only problem Ihave ever seen with them. It is not an engine problem, but an operator problem. These .75's will run circles around any other sub $250.00 dollar .75.
I have helped setup 5 of them now, and have never experienced a problem with them. Ido initally break them in by heating the cylinder with a heat gun to loosen them up, since they are true ABC and are quite tight. Anyone with any experience will know that a good ABC engine is tight.