Bill: Hang in there with them. I use acetone and lacquer thinner on almost a daily basis refinishing pianos, furniture and freeing action parts. A little fumes of acetone and lacquer thinner will open the sinus and a little heat used wisely has worked well for me. Will acetone free and clean action parts containing 'sugar' from coke, coffee, & etc? Tommy Black Decatur, Ala.
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