have you checked for any shorts at your footswitch? Make sure there’s no stray wires touching or too much solder underneath that could be causing an issue.
They’ll fit, I never have anyone ask for them as they don’t use batteries at all in their boards.
The switched power jacks are right at 13mm or 1/2”, so add a bit more for play and powder coating.
I had to be picky with the 2399, but I love this circuit.
I also bought 100 of the SMDs and plan to use these next time:
https://www.pedalpcb.com/product/6-6-3/
@Robert I forget what it was, but you had been working on a delay that you were going to update after you’d receive the proto boards. Any luck with those? I know you have your hands full.