Upper Midwest Maintenance

A couple of ADs are coming due on my ship, so I thought I'd try to get
a bunch of other things taken care of at the same time (some minor
gelcoat work, a new air strut for the canopy, new mylar seals, maybe a
new seat harnes, etc.).

Can anyone recommend a good facility for all this work in the MN, WI,
IL, IN, MI area? I'd appreciate "one-stop shopping," and would prefer
not to flog the old trailer too far afield.

Thanks,

BravoNiner