Hey guys. My name is Steve Walton and I've been a member here for a while now but haven't had much to comment on up until now.In reguards to the gas/oil ratio dilema that is currently being discussed I can tell you what I have learned lately. Being involved with modern mx with my son riding a 125 2-stroke, while the manufacturerer recommended 32-1 just about everyone I talked to, whether they were just the father/mechanic or a reputable engine builder, they pretty much all said the same thing...that a 32-1 mix was WAY to rich now adays with modern oils... 40 or 50-1 was much more suitable. And that was running a 125cc at 10,000-12,000 RPM. Or you can go with what the Weavers at Hugh's Bultaco recommends for Bultacos...52-1. I think they would know...they've only been rebuilding the engines for 40-50 years. That's the ratio I've been running in my 250 'sang with no problems. But this is one of those subjects that everyone has their own opinions on and probably none of them are totally wrong, so you go with what works for you, and use common sense. I will say that I have never heard of running 100-1 ratios in any 2 stroke,  and I have been around all types of them for 40 years now, even low reving engines like the Bultos but I suppose it is possible. One final note...I have found it very helpful  (although expensive) to run race fuel (I use Sunoco Turbo Blue 110 octane) in the Bultacos that I own as they all seem to have quite high compression ratios suitable for race fuel, and running a lower octane fuel will absolutely make an engine run hot if it needs higher octane.  'nuf said. Thanks for listening. Steve Walton  bultacowally@...