About one month ago I got a KX85 brand new. I just went to the track last night for the first time and realized that the black (maybe oil?) stuff on the bottom of the exhaust pipe wasn't normal. I'm not sure what it is or why it is there, but none of the other 2 strokes or 4 strokes had it. Any suggestions? P.S. using semi-synthetic oil at 32:1 ratio, never had fully synthetic used.
Also, sometimes when I try to start my bike it makes no effort to start, like it is locked up. I have tried starting 1st with clutch and neutral. Any ideas?
TL;DR
Black stuff on bottom of exhaust pipe and locked up when starting. Any ideas?