[Arran]

Those brown drop capacitors are pretty reliable, however many seem to be bridged across the "dogbone" style BED code resistors which are often not, sometimes they are spot on, but most times they go up in resistance, sometime doubling. You are correct, unless RME made the resistor in house with their own code, the RMA code was Body, End, then Dot, I'm pretty sure that brown, black, green should be one megohm, first digit is one, second is zero, followed by five zeros.
From what I can tell RME liked using Dakaware knobs, which are still being made, though you could probably find some used ones at a Hamfest or swap meet. I have a number of these knobs but I usually see them on test equipment, none of my communications sets used them, including my Nationals, Hallicrafters, or the Hammarlund (the Hammarlund uses a style of chicken head knob on most controls, except the tuning and bandswitch ones which are wrong). I've heard those style of switches called a leaf switch, some radios used them in the bandswitch, operated by a cam of sorts.
Regards
Arran