I have a 1998 ZX-6R which once was a race bike. It was converted back to street when I purchased it in 1999. Currently the bike runs great, however won't start up when the engine is hot. The engine will turnover but won't start. I would have to wait 10minutes before I can start the bike again. I changed the fuelfilter, clean the carbs, changed the air filter, and replaced the coolant. The bike still has the same problems. Does anybody have any suggestions?