I just installed a Ricky Stator adjustable timing plate on my 97 shee and set it at + 4 deg. We went on a ride today and it ran like crap. That is the only thing that I did to the motor. It seems to start fine when cold but after riding for a few minutes it won't idle or run unless it is wide open. It has always started on the first kick hot or cold before. I also checked the pick up and it is set at .010" . It also would bog pretty bad when I would rev it to keep it running. When it would die on me if I waited a few minutes it would start right up and would run good for a few then start acting up again.The rest of the motor mods is Cool head with 18 cc domes,Weisco pistons, T-5 pipes, uni air filter,Jetted . I run it on 110 octane race gas with yamalube 2-r mixed at 40:1.This thing has always ran great until this mod. Could the High compression with the advance be too much?