So I watched THIS YOUTUBE VIDEO and figured out what to do. Basically I soldered a 4.7 uF capacitor from the base (pin 1) of Q24 to a ground pad (negative cap leg to ground). He suggests you can use a 1 uF all the way up to 10 uF depending on your preference.
The trade off is it does seem to soften the envelope a bit. It sounds a bit less snappy, so I might go back in and put this mod on a switch. The volume envelope sounds a little bit compressed now, which tames the acid edge perhaps a bit much. Of course you can still get the filter screaming or whatever. But I recommend a switch.
The mod really does work well, the clicks are almost completely eliminated, which makes the monotribe now a joy to play as a monophonic keyboard instrument (see: MIDI mod in an earlier post).
If you haven't cranked this thing up through a guitar or bass amp, you've got to hear it.
Here's the transistor pinout for Q24:
And here's the best picture I could get of my cap soldered in place. I would recommend cutting the leads to the right length, and tinning them with solder, before installing the cap. Do the transistor connection last, and as quickly as possible to avoid damaging the part. Tinning the capacitor's legs helps here because you only need that tiny bit of solder to make that tiny connection, and it frees up a hand to help position the parts. It really wasn't that bad of a task. It came together quite easily with the right technique.