Some will disagree with me, but...
This dribble is usually affectionately referred to as "spooge". To me, having a little dribble down the tail pipe is a sign that the motor is getting good lubrication. And frankly, I am glad to see a little versus a little worried if I don't see any. It is a 2 stroke and much of the fuel leaves the tailpipe unburnt.
I prefer to run 36:1 synthetic (mobil-1 is my favorite) - my thoughts are that the 50:1 recommendation from the manufacturer is partly to keep smoke and emissions to a minimum. I prefer to have a little extra oil in the mix - better ring seal and more lubrication to the bottom end crank bearings, etc. Also, the oil film on the cylinder walls helps to transfer heat away from the piston.
It sounds like you are happy with your jetting now. What are your jetting specs. Does the bike respond well throughout the rpm range?
jeff
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