The Cox wrench works good. The heads too. Everyone has those around. I don't think I have ever worn a Cox P/C out yet. Had a rod wear through the top. They just get faster and harder to start. The cases wear, and give uneven runs. I have an old Stels with a rear exhaust that splits into two, and a Norvel where the muffler just goes straight back too. They might have been earlier models. The Stels is quick after I replaced the main bushings with home brew ones, which were way too loose from the factory. It would not give an even run at all. Up, down, up down. I tried to get mostly .049 Norvels, as that was the limit for the speed events. Since then, I have got a few .06 and .074s whenever I find them reasonable.
Last edited by aspeed; 09-27-2017 at 06:14 AM.