HP 461A - Adjusting Frequency Flatness

While I'm waiting to sort out the 8902A situation, I thought I'd revisit my HP 461A Instrumentation Amplifier and adjust the flatness.

[PelDaddy]

Thanks for sharing. Perhaps you could stick a metal screwdriver or similar in that inductor that lacks a slug just to see if the change in inductance would help you flatten out the response.This might let you at least see how the curve changes.