I have the EBC Kevlar clutch in my 03RM265, with stock basket and pressure plate. When running the clutch operates fine, with no sign of fading. But now the bike is very difficult to start in gear, even when warm. I assume this is because the EBC clutch has one more friction plate than stock and has more total friction surface. (I have cable free-play)
I used Rotella 15W40 and I had some "grabby" feeling when hot. I now use Castrol 10W40 which provides the best operation and feel when cold or hot.
Good luck, Steve.