Soaking in Acetone for extended periods of time is useless. I suggest you try testing your Acetone. Pour some on a clean dish and allow to evaporate. If it does and no residue, should be OK. I'd try one more time with a new batch of Acetone but for only a few minutes. IF still nothing, best leave alone. May be some type of glue that at one time might have been glued into place somewhere.





















