>>Avoid using anything wet to clean the action. Claudia, this is good advice. Moisture will weaken or destroy glue joints; warp wood; ruin felt and cloth; cause felt and cloth to come off, and, yes, hurt center pin bushings. People sometimes "blast" dirty action parts with pecan shells or glass beads in a booth, but even this often has its drawbacks. Any staining that you can't brush off with something soft-bristled I feel you should probably just leave on. What sort of rebuilding are you contemplating? Susan Kline
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