Quantum, I hope I am not derailing this thread, but just curious, how did you learn tuning, and how do you properly stretch the octaves according to your instrument? I see there is software out there that can help, but it's extremely expensive.Thanks!
TuneLab 97 (old, unsupported and free)
Mainly by reading texts and observing why my piano tech did.
as well as the many pianos in my university practice rooms