Originally Posted by Navin
My 41mm carbed 530 is blowing some blue smoke and burning oil so it's getting a Thumper Racing 570 kit and their reground cam, is there a link to a good set of step by step top end instructions?
A guy in Chico has a complete 570 kit for sale,cylinder/unused piston ready to go. PM me if interested.
The 570 kit sold locally,sorry.