I can't believe I said I used carbon comps but I was sort of tired when I typed that. I probably wouldn't use those for anything but they do look nice in old amps. What I meant was 5% carbon films, good old crappy ones from ratshack. They were all over the place when I measured them, same thing with the electrolytic caps. A lot of the time I don't think being too precise matters that much with guitar pedals, like using metal films and such. I've built pedals with either and in the end it never really seems to make much difference. Whatever difference it does make I think just adds to the pedals individual character.