[Exotics] WJ-8615 manual/info needed

[refmon]

Hi,

I have recently procured a WJ 8615D-S1 version E.1.0 which is in superb
overall condition.  Operations and remote control info (manual sections 1&2
were included with the unit.  I am in need of the later sections of the
manual covering maintenance, circuitry, etc.  I would, of course, be happy
to pay fair value for a manual or copy...it's the info I'm after, not
necessarily a manual as such.

Failing that, is there anyone on the list familiar with the 8615
sufficiently to steer on the following tweaks:

1)  Tuning center indicator tends to idle a hair high of center on an empty
channel (antenna shorted).

2)  Properly tuned signal tends to indicate a hair (slightly different) high
on the centering indicator.

Obviously, the discriminator balance or zero-bias is a little off, but it
appears there is an adjustment for empty and active channel situations.  Can
anyone steer me to the board/R #?

with many thanks

John Collins
Oregon