I also noticed that someone had clipped one end of the 47R resistor off the non-inverting input (aka, the lazy man's Reutz mod).
So I decided that I would replace all of the resistors and film/ceramic caps. Then I started to pull everything out of the case and I figured out why Keeley doesn't want to mod these. The knobs are, I believe, glued on to the shafts. I pulled two of the pot shafts completely free of the pots trying to get the knobs off. The third knob came off with some effort. So I replaced the pots as well. But of course I don't have the ones they used, so I had to jimmy up a solution that would work. It barely fits, and there is a light bit of stress on the PCB as a result, but it's not much and the board is very strong.
Busted pots:
Shot of PCB with new components (pots are now *under* the PCB instead of through):
I also didn't like the DC jack, as it's the non-barrel 1/8" looking thing (like on old wahs). So I replaced it with one of these cool small 2.1mm jacks that a McSpunkle found (Mouser part# 163-1060-EX). They are snap-in, so there is no retaining nut. As long as you drill right (7/16 seems to work a treat), they are snug as hell!!! Another bonus is that they do not have the second power lug for batteries. Fuck batteries.
And now it sounds like a mean machine!! I left the elctrolytics in (they actually weren't crappy), and also the JFET and diodes (but I flattened the diodes to the board). I added an IC socket and put an LM301 in there. The parts values were actually 99% identical to the original awesome 80s Rat circuit, and I kept things original all around.
Back of pedal showing cool small DC jack:
And here's the finished pedal with obviously non-stock knobs (and I love the LED through the "A"):
