Ouch!! Thanks for the input Jim. How about reputable places that rebuild them or better yet, resources besides Ebay to find and purchase a set of good AMT-1's or 2's that have been gone through, tested and what not ? Mom worked there back in the day when they were in Sacramento. She had a set that she sold in 1985 ... Haven't seen many since. Thought about bidding on a set that was on Ebay, but wanted to try to get educated about re-build sources, parts etc .... I was a bit gun shy since you can't listen prior to buying ... Thanks for responding! Ron