recently I think that i over reved my 02' model VTR250, which caused the bike to surge at crusing speeds. like 4th gear at 80kms. I have taken the bike to a honda dealer shop to have them look it over. the bike is 95% better now but it still has the issue... it now is no where near as bad as it was a few days ago (almost un rideable) but it still surges at constant speeds. I took the bike back explaining what was going on so they had 2x of their guys ride it and come back with nothing wrong with it. however within 5 minutes of picking it up, I was able to fault the bike again... the guy suggested that the carbs may need to be rebuilt. if this continues.. the shop changed the plugs, air filter and adjusted the carbs. can any one enlighten me on what i can do here.. I would like to rebuild them myself if i could to minimize costs but the bike is my only form of transport at this stage..