I have just experienced a strange clutch slippage for the second time in a week. Bike VFR800 non-VTec I always warm bike to 80 degrees before riding off. I take it easy for the first 5 minutes. Twice now, both at 5 min into a ride, I have given full throttle in third gear from @4,500rpm and the bike pulls away nicely, then at around 6,000rpm (where the power kicks in) the clutch begins to slip. At first I thought it was tyre slip on the damp road, but no, the clutch was slipping. On the second day when it happened, I knew it was clutch slip straight away, so backed off the throttle and resumed the ride at a more leisurely pace. A few minutes later I replicated the scenario and there was no slippage at all, in fact it didn't do it again all day, no matter how hard I tried. Oil is Motul 5100 (the best VFR oil) This isn't the problem. Is it time for a new clutch?