Take a flat Bastard file and file the gates flat, then replace the clutch plates with new ones that have soaked in the oil you are using for tranny. This will cause the clutch to engage smoothly.
Yes detonating/or spark knock will destroy your top end! Low octane fuel is a culprit to cause this along with too high of compression. Increased Timing will cause this issue, For each degree of timing causes raised cylinder temperatures. Approximately 900 degrees cylinder temperature is a...
Nice place to make a Rat hole in top of the piston don’t you think??? Mixture, mixture, mixture is way off. And or timing is way off , or air leak (vacuum )leak . But a vacuum leak down tester and test before ruining another piston !
Saginawparts is the seller’s name on eBay for the these select quality cylinders that have been prechamfered and Nikasealed for heat resistant and low friction. They sell for $99.99 shipped. You will need to purchase new studs for installation or remove old ones from old original cylinder but...
Find a working TORS system and reinstall it! Remove peacock on tank and clean it, so that fuel supply from tank to carburetor flows freely when it’s turned to the On position and reserve both.