HELP! Anybody got a schem for the Guyatone PS-005 overdrive?

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HELP! Anybody got a schem for the Guyatone PS-005 overdrive? a friend asked me to modify/rehouse his already modified/rehoused Guyatone PS-005 overdrive  pots are scratchy, needs replacement. im of the opinion that this could be just a TS pedal, but looking at the pot values confuse me. it appears the modder used a 100K pot for the tone control, and a 50K pot for the level. a 1M pot was used for the gain control. the owner says he's getting a lot of noise (the pedal's got 3 switches: a diode switch, a feedback cap switch, and another that switches between 1K and 10K which raises the output a lot). the thing hums, so i guess using shielded wires is needed.

just to make sure, that's why i have to see a schem. daym google has none :-P

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never mind. i traced the thing on my bench, and came out like this,