I had the same problem with a switch, the hot solder ran down and caused a short. I solder every switch tab just on two points where the tab is near to the board.
These charge pump are a source of squeal sometimes. Sometimes they are fakes, sometimes they are defective and sometimes weird interacting with other parts like buffers or other charge pumps happen.
I follow a certain procedure to mount the pots, i read here somewhere.
I mount the pots very loosely into the box and fit the pcb over the legs. After checking everything i fix the pots with the nut and solder them. This procedure can even out some inaccurate drillings or slight differences.
I love the Soft Focus. Its a patch on the Yamaha Fx500. Recently Catalinbread made a own pedal out of this. Unfortunately no clone pcb up to now, but youcan upvote on the Wish list.
I appreciate your pride to make a decent product. This is what we call in German "Handwerkerehre" - pride/honour of a craftsman.
But you had me at the word "forae" as a Latin scholar. It's not female but neutrum, so the plural of forum is fora.
I bought sets of resistors, film caps, mlcc, elco caps, colored LEDs and shrink tubes. Other parts I get from banzai and musikding, since I am located in Germany.
I rely on Björn Juhl, close the back lid and hope noone will open it again. Secret trick: No battery operation allowed.
Does anyone else seal the back with black goop or something...😝