[Elecraft] K2 RF Gain Control

[KD0Q]

I have a new to me K2 SN in the 1200's that appears to have a flaky RF Gain
control.  The lightest of touch on the knob triggers what I think is AGC.
The receiver goes silent for a few seconds, longer with slow AGC.  Is it
the pot or is there something else I should be looking at?

If I need to replace the RF Gain pot, what other updates should I do while
I've got the panel off?

Thanks.

73, Glenn KD0Q