<HTML>In a message dated 9/4/02 3:09:10 PM Central Daylight Time, kpiano@goldrush.com writes: <BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">I'm trying to get an upright ready in a hurry for a cheap temporary rental. The balance rail holes are ugly. </BLOCKQUOTE> I know this isn''t your way and I'm sure other technicians will respond to your specific method, but I'll tell you mine just in case you may find it beneficial at some other juncture or where materials, tools, parts and shop conditions aren't available to complete the job when needed or on time. I use medium viscosity cyanoacrylate glue to form a membrane over the balance rail hole in the key. Then I shoot it with accelerator and quickly blow the membrane into the hole with my mouth before it dries. I'm careful not to blow too hard because it can easily reach the key button bushings and ruin them. When you do this you can build up the sides of the hole very evenly and fully if this process is repeated to the point where the hole is at the diameter of the balance rail pin. When at this point insert a round file the diameter of the balance rail pin and apply right and left side pressure to elongate the hole on the sides for easy maneuverability of the key. You can get the keys to be completely secure from front to back this way if you do it right. I judge the key functional when I drop it in and it falls easily to the front rail punching and doesn't have any front to back play.</HTML>