@liza : changing the cloth on balance mortise is a simple job for the technician who have different cloth to choose from, and different calls depending of the size of the pins, small chisel to cut the old cloth (or other methods), so I suggest you ask a tech to do something for you, and he could probably make a little maintenance for one day or a little more, but and you take care of the keys yourself with his help. The cloth pins can be dismounted and provide some sort of wedge to hold the new cloth in place.. No need to press strong as it will push the glue in the cloth, very little glue is used.
Good luck. I
PS cloth thickness must be similar than original, but often 1.2 mm sometime 1.1 or 1.. There is some play with new cloth, and too much will allow the key to slant on the side so the good cloth, and a clean unglueing/cutting of the old cloth are necessary for cohérente result.
A moderate whack on the side of the mortise with a screwdriver blade will compress the wood and close the mortise a little, but but if you see the center part of the cloth or recess in front of the pin the cloth have to be changed.
Edited by Kamin (12/29/12 05:11 AM)
It is critical that you call your Senators and Representatives and ask them to cosponsor S. 2587 and H.R. 5052. Getting your legislators to cosponsor these bills