Hi Wiggles: I went to CH ignition on mine. Also went to new prop driver from CH, this got rid of flywheel, and got rid of spring starter. Doing this got the weight down to 5 oz. more than a G62 [sorry, I don't remember weight]. Doing this made no differance to top end but it is so easy to start and took low end roughness out of it. Been running it this way for a couple of years now,since I set it up I haven't played with timing at all but might try this summer just to see if rpm's will increase. We'll see. I have been using Pro Zinger 24 x 10 on it. Will try Menz this summer as I find I like them better and they are about the same price and available more or less locally. Good luck with your's.
Don