[R-390] Pulling crystal frequency in R390A

[Nelson Gietz]

Going thru the alignment process on this R390A on the bench, I find that crystal Y501 for 
the narrowest bandwidths is about 80 Hz above the required 455 kHz. In the neutralizing 
procedure C520 adjusts well, but I can't get L503 to tune low enough to resonate the 1 kHz
bandwidth at the same frequency. There is no visible evidence of damage or tinkering in T205. 
Could the two problems be related? (The crystal resonant frequency is about 455.076 kHz
out of circuit.)
Also, has anyone heard of or tried "pulling" that crystal frequency to compensate? How
would that work in this circuit?
Nelson