Welcome to the club
Given a S4 eh, not bad
I had the same sort of arse problem have a look at this thread, it solved it for me,
http://www.ukmonster.co.uk/monster/s...ghlight=corbin
Wrists and thumbs etc is probably more about posture and riding position, griping the tank more with your legs and not holding on so tight sorted that one out for me.
Cheers,
Shandy