Ok guys i have an 02' Yamaha Blaster Bored 1 size over and i have installed the piston an after 3 rides it started bogging and finally cut off and wouldn't start any more so i just took off the cylinder jug again and the piston was cracked and ate up on the side of opposite the arrow in which the rings were burnt as well... please help how can i tell if the jug has been bored or just honed as well as knowing how to stop the piston from burning its my second one im goingn on my third and want it running the right way just let me know what u think is the problem thanks alot........ I:I