I am running in my second engine now and found that the 1:16 with full synthetic oil is way too much oil. There is oil dripping out of the muffler everywhere, thats why I have not put the SBP Pipe on yet. So I have wound the mixture back to 1:25 and it still smokes but is a bit better. I added the new fuel mix while the motor was idling and when the new gas hit the carb the revs went way up. So I will run a vouple of tanks through with 1:25 then go to 1:30 and put the pipe on. But I will not run at WOT until I have done at least 500km's. So what do u do?