I've had good luck with Billy Yates:
>>Venice Amplifier Co. -
n6yw@verizon.net
437 Sherman Canal
Venice, CA 90291
Phone: 310 821 4663
Accepts: Please Call
Rates: Shop charge is $45.00 dollars an hour. My charge on parts is at cost plus shipping and taxes paid. Full restoration projects are priced on an individual basis. <<