Jon Thocker (who visits these pages from time to time) works out of KHAO (Hamilton, Ohio) and did the pre-buy on my -7. Was very satisfied with what he found, the recommended fixes, and the corrective actions taken.
You can do a search for him in the forums....
Airshow season, and he's active in that biz, so it's probably his busy time, but if he can't do it I'm sure he can recommend someone near you who can.
Welcome to the club!
Rob S.