The clutch is a bit of a weak point on the R1 post 2004 - I'm with Phase One Endurance and we found that out the hard way so in the end we "lifed" the clutch and the gearbox at 24 hours, too risky to try and use them after that - unlike the Gixxer thous we used from 2001-2003 which were virtually bulletproof. I dare say that your 07 bike won't have had quite such a hard life but if you want any advice on the engines drop me a PM and I'll put you in touch with Russell, the team manager, who knows them absolutely inside out.
Hope you get it sorted...
