good mileage wrought out when socketting the transistors.
IIRC that first MPSA18 was..a nuisance
If course when talking about modded transistors, we're ACerainly talking about 'this' transistor with 'Those' mods -subtexts...}where to start?
Who knows, transistor gain change and a BC transistor changed the sound.
This V847's got the other mods on it too...Y Fasel...tuned caps.
Took time to figure/chain/test/refigure/mod/chain/test.
You may have a wacky match of sweep range to pot taper..been so long since I've studied that schem...there's a small cap...which when made bigger tames the highs...messing about with the circuits frequency range while turning the wah pot with your fingers [loosen the rack gear] you may be able to find a portion of the pot where the taper matches the [modable] circuit response.
The pot taper can also be altered using testclipped wires and resistor[s,