Those are the consecuences of messing with a Si FF! You'll have to place a small cap, 100p for example, between C and B of transistor n°2. This will roll off some highs. If squealling doesn't disappear, try a larger cap, 150p, 220p, and so on. Start with 47p, high values roll off more highs.K, thanks ill do that. it works perfectly with a Hot dot box (pre amp/boost) before it however. without that the fuzz fizzles out while the clean singles keeps sustaining
cool...now it's time to adjust the bias to get it right on.
Did you make note of the voltages when it started working? It'd be a good idea...
Pull the 8.2K and substitute a pot (20K+) there and adjust until you get Q2 C to around 4.5-5.5v
The fuzz probably won't fizzle out anymore.
btw, any clue why it worked after you changed the input from mono to stereo? it should work either way if you use the right lugs.
but, stereo is preferable since you will be using it as a switch for the battery.