Thanx for the shem,
this Fuzz Face got the right name, because it is so easy to tweak.
For some more volume I lifted R4 to 1K. For biasing Q2 I took 10K at R5 (4,8V).
Instead of the useles C5 120n I took a Mullard 0,022uF, because I was missing a position 2,5 on the Tweak knob.
Of course the Mullard mojo oozes now through the whole circuit