I'm running fine. I forgot some of my problem is a very tight rear wheel assembly from a bike store repair while building the bike. They said it would have to wear in a bit and that is accounting for a lot of my rough running. That is getting better as the bike runs.

I am running the 1/20 break in mix. I was hoping for a little better gas mileage with the 1/35 mix simply because the octane should go up. More combustion with the thinner mix. It is well within the mfg recommendations for the engine.

If there was no difference in the power/mileage, why would there even be two mixes. That was my thinking.

I also run this engine on a 24" wheel. I was told this would make it run slower but climb hills better. It will climb the small hills just fine, but it slows dramatically on larger ones. Even to the point I need to pedal. That surprised me some. Again that tight rear wheel comes into play some there as well. I note that I have to be very careful or I accidentally apply some brake. Coaster brakes you know. I think the bike shop set them tight and I just have to wear it down now.

Thanks for the info though.