Thanks for the link to the pin block repair parts page. the Sohmer was sold to me "as is where is" in 1982 at a $800 discount, with no dealer support since I lived 140 miles out from KC, MO. It has had two notes that sagged in pitch in about a month, since I bought it. The KY piano tuner installed a $140 damp chaser, which did exactly nothing for the problem. He was tuning flat to save time, too, I've discovered since I got the organ. Good riddance. I will think about an oversize peg or reaming and installing a bushing in one of those notes, and bringing the Sohmer back from the junk status it is on now.
I had a little trouble tuning the top octave of the way out 1941 Steinway in octaves from the bass strings. I knew about the out of tune overtones and had heard of stretch on organforum.com. One key (sharps and flats) would sound good on top octave, another wouldn't. Tuning the Steinway in unison to the pure sine waves of the Hammond H100 eliminated that problem and made all notes very pleasurable. It is possible the H100 has stretch, it was made to sell to churches where piano/organ duos were pretty common practice. My computer doesn't generate audio, thank you. When updated to modern free software it won't even echo typed input, so my op system is about 6 years old. Tuning is all a great mystery and I haven't been through to proper apprenticeship program, but (deleted). When I had money, the only tuner around (and he was in the next state) dissed me, forget him. Now that I'm living on a bit of nothing, with infinite time to practice music, I'm not going to start buying expert skill soon. As you said, pianos are almost free, old and in the way. I overpaid for the Steinway about $500, just out of respect for the lady that listed it again instead of trashing it after the pro turned up his nose because of the child impacted veneer. It was 4 days from donation, when I bought it.
Oh and thanks again hmfaadopter for the straight info. There are several sites that google likes, where the answer to every piano question is "Hire a qualified piano tuner". Yeah, right after you move to the coast or the UK.