Lar,
IMO, the first mistake was tuning it so soon after it was moved from "the basement"! I have, over the years set a policy of NEVER tuning a piano just moved! It has to set for at least a month, preferably 6 weeks. It takes that long for wood to reach equalibrium. The second mistake was not tightening the rim bolts, ect. Also, did you check the back posts, etc.?
Just my take on it, from my 41 years of experience.<G> (way different than yours I suspect.<G>)
Best Regards,
Joe
P.S.
I've referred a, 1912 Baby Grand Krakauer Electric Player to you. I've already tuned and done necessary repairs. Just needs your marvelous expertise in the player area. (that's that different experience thang dude.<G>) Main item is the original electrical cord. Next item is: there seems to be loose, (new), tubing and "dead end" tubing, (knotted), in certain areas. Well, I know you'll be able to figure it out. <G> Client claimed it worked, but I didn't attempt to test it because of the electrical cord and time constraints. BTW, the cord is definitely not UL approved.<G> And you'll need at least 10 feet of new cord.
Very Best,
Joe
Funny you should bring up the topic. Yesterday a tuned a vintage 46" Knabe upright (c.1936). Two passes to bring it up 25-100 cents - and no broken strings. I suggested the client's grandmother's piano likely hadn't been tuned in 20-30 years; client agreed. I don't expect any complaints even if the tuning slips a bit because:
See the Reyburn Cyber Tuner and similar devices.
RCT possibly does the best job as it measures each note and calculates an over pull.
The man behind the tuning lever can decide what the limits of that "correction" will be.
If the previous tuner did a good job of tuning, then the calculated over pull is sometimes very nearly at the target pitch.
For me, that target is 999 times out of 100 A440 on a first visit.
Regards,Don Rose