Acoustat Rebuilds

I have a friend who has a pair of Acoustats (4222, I think). He's interested in rebuilding them himself, or shipping them off to someone who specializes in Acoustat rebuilds. I thought I'd ping the group to see if they have any resources for the home rebuilder, or a reference to a pro.

Mike Savuto a.k.a. Analog Associates. He's a great guy, an Acoustat fanatic and has even developed serious, deep modifications for Acoustat servo a hobby. He can instruct you on how to rebuild or if he has time he'll rebuilt (for a fee of course.)
I have not yet contacted Mike for my Acoustats but he comes very highly recommended.