Michael "Mercury" Morris at Vintage Brakes does excellent work at a
fair price and in a timely manner. I highly recommend his work.

He overhauled my AS-W20 P.O.J. Tost unit including detecting and
bushing out the ovalized holes, installing high performance brake
shoes, and making the shoes and drum concentric (unlike almost all
stock Tost brakes I have ever seen). The brake would lock, if I
desired, after his work and continued to perform perfectly for years.

Happily, he is not wise enough (yet) to stop working of whiner glider
pilot's brakes. I believe he only works on "racing lawnmower" Tost
brakes as he does not want the liability of working on aircraft - and
maybe because lawnmowers are the only thing a stock Tost unit is good
for.

Mark (AS-W20C with a real hydraulic aircraft brake)