Loophole Detune

[Masochist]

Hi there! This is the 2nd Loophole I've built (this one is for a friend) and I'm having the exact same problem with both! The detune momentary doesn't work I had a look around the forum and found that I'm not alone but didn't see that anyone had solved the problem? I guess I just wanted to see if there is any more knowledge on the subject before I give up completely. It's not the end of the world because I don't think I'd even use it but it'd be nice to have it working. I think it's got something to do with the 22R resistor, right?