Funny but yesterday I thought the same thing myself about the switches, so I cut a new front panel did away with the treble bleed switch (left the cap on) and run the other two to the back panel.
I was just about to shield up the wires to the volume when (embarrassing bit) I realised I’d used carbon comp resistors nearly everywhere on the board, can’t believe I didn’t notice that straight away.
I must have done this deliberately for some reason at the time but I’ll swap them over with the metals when I get some, redo the shielded bits and see what happens.
Thanks everyone for input.
Stax