What makes you come to the conclusion your rear brake needs to be sharper Liam (he asks in a suspicious tone)?
The feel and response just isn't as good as when I had my original 600 - granted it could simply be a case of expecting too much from a heavier bike. I've had no real issues stopping, just figured it might be worth switching the pads out to see what a difference it would make. If I find the EBC pads aren't any good, I'll put the old ones back in and pick up some SBS Ceramics as its the brand / type I've had good experience with before