Electro Harmonix Little Big Muff Pi vintage pedal - Fully Working with Tone Mod

Description

Up for sale is this vintage Electro-Harmonix Little Big Muff Pi distortion/overdrive/fuzz pedal
with my own tone mod.
This is the opamp version of the Big Muff design.
I prefer this design to the discrete transistor style that is most typical.
The one thing I never liked is the tone switch - stock is either full treble or full bass.
I kept the full treble setting and modded it so the bass setting (down position of switch) can be adjusted
to suit your taste. Huge improvement!
You can dial in your own tone with the trimmer (Bourns brand single turn trimmer).
Leads to this trimmer have been heat shrink wrapped and will not short out on anything.
see pics
CTS pot is date coded: 1377840
That is:
137 = pot type
78 - year 1978
40 - 40th week of 1978
Fully function and ready for use.
Missing the battery cover and a couple of the rubber stick-on feet.
Has some wear to the finish/paint job (see pics).
The pedal has been serviced and modded by myself.
I am a pro at this (my main job is building modular synths and guitar electronics).
Pot and switch are scratch free. Jacks have been cleaned.
All parts are original aside from the trimmer used for the tone mod.
Any parts I removed - old washer for pot, 10K resistor, and one brown wire - are included
just in case you want to undo the tone mod and go back to 100% stock original.
The circuit has been traced out and documented which will be included as either
a print out or a pdf for your reference.
I love this circuit and have serviced this pedal with great care!
At this point, I have made myself a couple clones so I want to sell this original to any collectors
or others wanting the 70's original version.
Please feel free to ask me any questions.
Thanks for looking!