does piston slap sound like a regular 'tick' that coincides with rpms? i think my morini is experiencing it, since i have ruled out every other cause and narrowed the noise down to the cylinder area. what are some signs i can look for, like on the piston or cylinder walls? (i havent seen any...) i dont have a manual, and unless a morini MO-1 has the same top end and the reed valve M-1, i dont know the specs for piston clearance. at really high rpms it sounds like its going to shatter apart.