My fuzz factory clone doesn't work well with my hybrid fuzz face. When connected none of these pedals are willing to work. I'm using my diy 9v regulated power supply for both. Should i give them separate power supply's or battery?
Perhaps. What kind of polarity power does the fuzz face take? If it has a positive ground, that can cause some issues with other pedals that have a negative ground. I'd test each with batteries to see if the problem persists.
Also, both the Fuzz Face and Fuzz Factory tend to expect the relatively high impedance of a guitar, so placing one before the other can have some negative effects.
Do they still pass signal when connected? If they do, is the sound weak and thin? Are both on at the same time? Is the Fuzz Face you have true bypass? Have you tried swapping the order?
Npn fuzz face. Negative ground. Millenium bypass 2 is on both. They can not be turned on when they are connected. None of them.
Wiring problem. Show us how you wired them.
And today they work just fine ... Got up this morning and wanted to see which one won't work with my digitech chorus. Surprisingly both worked with chorus, so i connected them together and it's ok, they work together. I've opened fuzz factory and the ground is touching the bottom of the enclosure ( 25 mm is the height of the box ). After correcting that everything is fine.