Re: what did you do to your motor bike today?
Got a look inside my engine and found out what happened to the carb barrel slide tit. That sucker got sucked in and spit out the exhaust according to the nick in the cylinder about 1/8 inch above the exhaust port. The piston is cruddy on top and the coloration is clean toward the intake and dirtier toward exhaust. I'm hoping the yamalube will gradually clean some of the deposit. Plug is looking good.
I just want about 10 more MPH with plenty of torque for the hills without spending a fortune or blowing the thing up every other week.