It is time to reveal the answer. Many of you made valiant efforts to explain the cause, and I think some came close. But I didn't recognize in any of those what I actually did. There was not enough clearance between the ends of those keys and their wooden drop lifters. So the end of the key would engage the lifter, and when you let go the key, it returned slowly--it had trouble disengaging. So I removed those keys and could see exactly where the key engaged the lifter. So I sanded those spots off, and the problem was solved. Perhaps we need to add that to the list of possible causes of sluggish keys. You're welcome! Arlie Rauch Glendive, MT >> >> In a message dated 3/21/2011 9:42:29 P.M. Central Daylight Time, adarpub at midrivers.com writes: >> It's 34 years since I began servicing pianos, and today I saw yet another first. Let's see if you can guess what it was. The last six or seven bass keys were sluggish on an Acrosonic spinet. The keys were not tight on the balance or front rails, the action was totally free, and the key slip was not butting up against the keys. Why were the keys sluggish? >> >> Arlie Rauch >> Glendive, MT=
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