my bike started bogging yesterday2005 stock xrl i adgusted the fuel mix screw on the bottom of carb with the little handle and it stopped. im gonna clean the carb soon and i was thinking about putting stp fuel system cleaner in gastank has anyone ever tried this? it said it was for carb and fuel injected engines. i had the same problem 1 month ago backfired and stopped. any advice/comments is appricated.thanks.