Mark, RCT has a pitch raise function which works excellent and it follow a similar principle to Tune Lab's, I believe. The software does not know the condition of the soundboard but in RCT, you can adjust the standard default overpulls by reducing or increasing the percentages. These percentages are spread in several areas usually between the bass/tenor/treble breaks which you define before you begin. A quick check with a downbearing gage might be all that is needed to decide on what overpull percentages to go with. I've never needed to adjust for this myself, but there are certain types of pianos I back away from the recommended overpulls on the top half octave in the treble or else it ends up too sharp.
This adjustment on percentages also prevents exxcess string breakage on old pianos or large pitch raises. 35-40% of overpull in the treble might be too much on rusty old strings.
Edited by Emmery (03/07/14 11:19 PM)
George Brown College /85