since i aquired my first polini kit last year at the Gettysburg rally i have been having nothing but problems with it. With my first setup i was snagging the piston ring on the exhaust port after breaking 4 rings and having several different setups i rote it off that the cylinder was faulty. Last week i picked up a brand new setup. a minty frest D polini 64cc kit. after my first ride it looked like this.(see pics)
I hear alot of different opinions about timing some as low as 1.1 btdc(https://www.mopedarmy.com/forums/read.php?7,3114386) and some as high as 1.7 (https://www.mopedarmy.com/forums/read.php?7,3102337,page=1before top dead center) his cease looks identical to mine. i need find out what exactly is the correct timing.