If you rarely would do this work, maybe it doesn't pay to buy all the
tools, cauls, and various thicknesses of bushing cloth you would need.

You can send the keys to Debra Legg, who will do a great job at a
wholesale price.  Debra is in Massachusetts.  Her phone number is (978)
546-8428.  She has been advertising piano key services to piano
technicians in the PTG Journal for many years.  She is also a very good
player piano technician who bailed me out by figuring out the tubing
schematic for a very complicated Ampico upright and sending it to me.

Bill Maguire