[img]http://img.photobucket.com/albums/v317/StephenGiles/EH_MMdeluxe2.jpg~original[/img]

[img]http://img.photobucket.com/albums/v317/StephenGiles/EH_MMdeluxe1.jpg~original[/img]

Okay, can you follow a schematic?

Build your self the audio probe from this page http://www.diystompboxes.com/wiki/index.php?title=Debugging

Check you have signal at the left side of the .1 cap coming from the input, then check pin 1 of IC1A and the outside lugs of the blend pot to start with.

Does the direct output work? It might be the foot switch, you can use a multimeter to test it for continuity.

Always glad to help stop vintage EHX becoming a door stop

Pedalparts is good, nah you don’t need to worry about that too much in this case.

You can use 100k, you may find it’s very touchy though… 22/25k (depends if you’re in Europe or US as to which will be the standard value) would probably be better.

From memory as i’ve never done this mod, it increases the gain of the input stage so you may find especially if your pickups are hot that some distortion is introduced in to the signal.

To be honest, the best and only way to properly defeat the small stone volume drop is to build up a small boost circuit and hook it directly between the pedal output and the footswitch… something like an LPB-1 would be fine and can be built on a small piece of vero board quite easily. You can visit either DIYStompboxes.com or Madbeanpedals.com’s forums and there’s a lot of helpful and friendly DIYers who can help guide you through the entire process (my self included) although be warned… DIY can be quite addictive

No, the small clone and small stone are entirely different circuits.

The problem is at the first half of the 4558, dig around and find out why pins 1 & 2 are 15V (should be about half supply).