yep, OS F plug, fuel is 20% nitro/16% oil castor and synthetic blend. Here is the site for it :
http://www.morganfuel.com/sidewinder_byb_detail
It is cut 1 to 1 with straight methanol, then mixed with 2 parts premium gas. Before the acetone these were my ratio's:
Nitro -4.33% Oil-2.66% Methanol - 27.33% Gas - 66.66%
Good in theory, but wouldn't mix. I could add Klotz until it mixed, but the oil was WAY too high by then. It would run, but not that well, and of course made a mess with all the extra oil. Now that I have added the Acetone to the mix, I slightly lowered the gas content to keep the rest of the numbers in check. This put's my current oil ratio at about 36:1. Slightly leaner than those using the 10%/10% mix, but that should be fine. Glad it seems to be working out. Many thanks to everyone who has developed this method. I love the hobby and plan to be around a while. Hopefully I'll be able contribute and to pass on some of the things I've learned to others. This is only my second plane, but I do love tinkering with these little two strokes. Not just planes, but boats too. I also have some machining ability, but my access to a lathe and mill are somewhat limited. I am the guy who would much rather build my own prop adapters, engine mounts, etc.,etc than buy one. Anyway, thanks again, I'll post a couple pics when I get her all together. Chris