keyblock shift pin / keyblock alignment

[J Patrick Draine]

A local middle school has been replaced with a brand new building, and  
the beat-to-death Baldwin Hamiltons replaced with two (or more?) new 
Kohler & Campbell uprights and one Boston GP163 grand.
I am disappointed that the region's Steinway dealer apparently has a 
"zero prep policy" for pianos not assembled in NYC if they are sold 
through their educational/institution pipeline (no doubt at a very 
significant discount from the usual retail markups of course). The 
Boston has been at the school for about 4 months, and received a 
"complimentary" dealer tuning a couple months ago.
Well, I was expecting most of what I found: 20 to 50 cents flat, lots 
of rattling coming from the action, keys binding on the keyslip. 
Unfortunately I neglected to do a test of the una chorda pedal before I 
removed the cheekblocks (keyblocks according to Mason, old habits die 
hard), flexed the warp out of the keyslip, pulled the action, and 
tightened all hammer and wippen flange screws (some of which needed not 
just a quarter turn but several full revolutions!).

Unexpected: when reinstalling the action I found the keyblock/shift pin 
alignment to be wildly out of whack. Without the keyblock screws 
installed the keyblocks twist about 5 or more degrees, such that the 
keyblock (the back end flexed out more than an eight inch) binds on the 
A0 key! When the guide plates were screwed tight, if I pressed the 
keyblocks into position, they line up with their screws, and appear 
perfectly aligned. This causes a significant flex on the shift pins, so 
the action doesn't shift properly.
At this point my aggravation with the dealership boiled to the point 
where I chose to tell the music director that "this is a dealer 
prep/warranty issue."
O cognoscenti, what would you have done at that point -- bent the shift 
pins at a compensatory angle? Dealer prep guys, do you run into this 
often?

End of rant, happy to hear any sage advice,
Patrick