yeah, i made one with lower gain (100-130hfe) mullard oc42 in q1 and q2, and she is tight as hell, so smooth for this noise monster, i soldered em' in they are so sweet sounding. so a follow up on the project, i was having trouble desoldering any of my caps (bad desolder braid, and very little room to work with) so i did not solder in any new caps but i tried (by just touching to the pins in parallel with the existing caps) an 100u as well as 22u and 47u in the input position and c4 and c8 and found there to be no difference in tone, and if there was my ears are too blasted to hear it. most of the stuff i see on the internet about it (there is very little) makes it seem like 10uf for those positions are going to get as much bass out of the circuit that you possibly can (considering the fat fuss face uses 2.2uf for its fat switch like netnnk said). i am going to try to work up a mastotron with a blend control for this fellow and see if that suits him, as that circuit was designed with bass in mind (i think). anyone have experience with that one/ care to share the voice or character of it with me? thanks for your input, and BTW i am not a quitter, i just know when i am about to open a can of hell worms, and sometimes, it aint worth it. happy building!