<HTML> <P> <STYLE> BODY { font-family:Arial, Helvetica, sans-serif;font-size:12px; }</STYLE> <br> All good comments so far.  There's something about going back to replace the string in the first place that makes me uneasy.  If I knew the customer was "combative" (for lack of a better term right now) I think I'd have him/her sign an agreement prior to replacing the string and have the subject to include something in the neighborhood of "no guarantees" and "the string will detune readily for awhile" and "initial breakage was not your fault" and "it will cost $$$".  Additionally you are going back to replace the string as a sincere gesture of proper service.  I think I'd be tempted to word that in there somewhere as well.</P> <P>As for the additional notes that don't work, you have to go back to determine for yourself and your own defense what the problem is.  THAT call may be at your own expense.  If he/she agrees that you can effect repairs, if needed during THAT visit to supposedly fix the problems with those notes, he/she need to be informed of the cost prior to anything being done.  I'd also insist that he/she be there in person and be readilly available to discuss the findings  ..........  if any.  It would be best if he/she were a total witness to your movements as you take the piano apart to inspect.</P></HTML>