any ideas on the hanging throttle? I strobed the timing, when its idle normally, shows halfway to full advance. when it races, it shows bout an inch and a half past full advance. I screwed with the mix screws a little, thinking the left carb was funny, and it would kick/ spit back when trying to kick it over, valves are spot on, just re-torqued the head. was still at 30 ft/#'s I have a new cam chain, and checked the tensioner, flush to outside, and maybe 1/16 of movement, maybe less? is oil supposed to collect in the cover there?