Crap, stripped the R1 down to check for bits and bobs and to have a good clean and noticed Exup valve was siezed solid
. Tried to look at it but its that sized the slightest knock causes it to crack and split.
Cue 80 mile round trip to drop it off at the shop. They are sorting it under warranty for me. Even if they do manage to undo the bolts to remove the Exup valve it will need replacing. Worse case they are going to have to drill the bolts out becuase they are solid.
Frustrating, but ive given the bike the once over now and that was the only fault I could find. I had to regulary service the part on my old R1 or it would stick. Guess the previosu owner didnt know much about that.