I just refurbished a Super Fuzz that was in rough shape and added in a trim pot. Because I notice an absence of any videos about what the trim pot does I made a few. Here's some links if anybody would like to take a look:
Part 1 Univox Super Fuzz - Part 1 of 3 - YouTube
Part 2 Univox Super Fuzz - Part 2 of 3 - YouTube
Part 2 Univox Super Fuzz - Part 3 of 3 - YouTube
Part 1 Univox Super Fuzz - Part 1 of 3 - YouTube
Part 2 Univox Super Fuzz - Part 2 of 3 - YouTube
Part 2 Univox Super Fuzz - Part 3 of 3 - YouTube