Randy; Thanks for your response. If you mean by catalyst, the accelerator, yes I do use it. I've had small amounts of the foam using it before, but never anything like this. (The next time I tune the instrument, I'll take a photo.) I've never had the pins turn a rust color either. I didn't treat the high treble, so the pins have no discoloration there. Jim -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://www.moypiano.com/ptg/pianotech.php/attachments/20120416/f29670ae/attachment.htm>
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