so I've just rebuilt my top end with new everything, put in fresh petrol and Motul 710 oil, I have bedded in with 4, 5-minute warmups to start with, and then stripped it back to check everything still within the specs.Upon stripping it I find everything coated an awful black two stroke oil, its as if the carbon has been absorbed by the oil,I guess this is by way of the oil being promoted as a smoke-free oil but if it builds up even more when I'm running it for an hour or so in the air then where is all this oils gonna go and I'm getting oil spray on my prop,ugly mess,im thinking I should get a carb seal kit and service the carb,,oh , runnung at 40-1.so my question is .is it normal for thease mosters to spit out soo much two stroke.