For my own future reference, here’s the status of my DS-1s. I switched the battery covers and knobs to get them back to “stock.”
On the left is my first pedal ever, circa 2001-02 for use in No Front with a borrowed double cut Les Paul Jr. and AC30. Cole performed the Casper Electronics mod and did the battery cover art around 2014-15, I did further Casper-related mods in 2016, and recently I put a tone stack mod on a toggle hidden in the battery compartment. This unit will live on the synth minirig board.
On the right is the “DS-1 lab,” my research platform and repository of all of my favorite adjustments, from 2016. It’s a studio piece for guitar, mostly.