Ok so heres the problem I'm having. On wide open river run the sled will run up to 8,000 rpm after holding it there for several seconds the sled slowly looses rpm to about 7,500 rpm and will stay there then there will be a sudden drop to 6300rpm and then will spike back up to 7500rpm if you keep holding it youll get the spike back down to 6300 and back to 7500. the only way it will jump back to 8,000 is if you let completely off slow down and hit it again and then this process starts all over again. The sled has 900 miles on it, the power valves have been cleaned and it has a brand new belt on it. Any ideas of what this could be is it fuel related, electrical or is it in the clutching. I've talked to a couple dealers and they seem to be no help. Any advice would be great, Thanks!