hey,I have a 94 fe 600 which when riding, began revving up, as if in neutral or there was no load on the engine, this happend very abruptly and would fall back into gear, or regain drive, when the revs dropped very low, this only happend in 3rd gear upwards and got progressively worse until there was no drive at all in gears above 2nd, as it was losing drive so quickly, it didn't feel like the clutch slipping although i have just had a look at the gearbox and cant see anything that would explain what happend, so now i'm inclined to think it was the clutch, has anyone had any experience of the clutch slipping very abruptly only in higher gears, probably as its spinning up more?