Then we need to go to amplifier repair 101, especially after finding shorted pre-drivers.
Check these resistors since you didn't mention them:
R154, 156 43R FR VAS HR emitter
R146, 144 10R signal coupling
R168, 170 10R FR HR low current
R172, 174 10R signal coupling
R196, 198 22R, 27R CMR bias
Deviations more than 10% are BAD PARTS.
I have 2 UHQR's.
Dark side of the moon and Crime of the Century.
Both are incredible. I did have the regular MoFi Crime of the Century and the UHQR was a step above.
When I got LP's I had Kef 102.5 speakers and a proper listening environment.
Now I have a spouse. Enough said.
Tekerman