removing key pins

[Ron Nossaman]

>All action screws loosen up, they need tightening
>Tuning pins feel looser, after the piano is back in place, you can feel the
>difference after a few days
>and I observed the same pattern with the key pins


But then loose action screws don't necessarily mean bigger holes either. 
The flanges do shrink in height, as do the flange rails, when they dry out.

I haven't had much problem with seasonally loose key pins, so I can't say 
what's happening there.

Ron N