It all depends on how the carb is jetted. You can jet a bike to run 20:1 or 50:1 if you chose to...opinions vary on the jetting topic and it has been discussed extensively. My point is that if your bike is jetted for 50:1 and you are running 32:1, it will not run correctly. It will spit oil from the pipe, foul plugs, bog, etc. I ran my RM125 at 32:1 and it was jetted for 32:1, so it ran great. I would try re jeting the carb and running 92 octane. There are lots of people that run 50:1...I personally think that is too thin.