Need Stable Advice (and got it, thanks!)

[J Patrick Draine]

Dave,
While a full DC system would doubtless be an advantage, making certain 
that the immediate environment has been stable at the temperature it 
will be in when it's being used, at the time you tune it, will be a big 
help. That's probably one of the reasons they were thrilled with the 
tuning you finished just before the performance.
It's hard to "blame" the tuner, who arrives on Friday morning to tune 
the piano, for going ahead and tuning it when the room temperature is 
55-60 degrees (and the heat just kicking in), when the piano will be 
used as the room is at 72 degrees on Sunday morning. The "ideal 
technician" would have made certain the heat had been on overnight, or 
at least a number of hours before he arrived. Pay attention to those 
kinds of details and your customers will continue to think highly of 
you (although the person who worries about the heating costs will 
grumble a bit).

Patrick Draine