[R-1051] R-1051D questions

[Nick England]

Howdy gang -
I've started working on an R-1051D. I swapped in another master oscillator
and it came alive.

The D model has a front panel switch for AGC off-fast-slow. I have a
1051/1051B manual but no D model docs. This rcvr's AGC switch and the RF
gain control don't do anything - Does anyone have docs on the D model
IF/AF/AGC module? Or is the module the same as the 1051 and the D's front
panel switch just replace the AGC selection in the 1051 MODE switch?

This unit has had a field change that moves the USB and LSB Line Level pots
to the front panel (concentric with the Phone Level controls). Has anyone
got any documentation on this field change?

Anything else you know about the D model??
Manual is NAVSHIPS 0967-878-3010

Thanks
Nick England K4NYW
www.navy-radio.com