I'm working on an old piano.  The action is pretty stiff.  According to
Reblitz, the ideal answer is to take the pins out and ream the bushings.

Not having the tools for this, I'm looking at his alternatives:
alcohol/water mixture or center pin lubricant.  I've also heard several
other chemical alternatives mentioned.

Any comments on how well any of these chemical alternatives work?  Pros
and cons?

Mike Blackwell