Thank you very much, Sputnik!
The gain-object didn't work (it goes to 16 but I don't hear changes after 1...), but the shift-module did it!
I already used the vca-objekt but couldn't get a signal bigger than 64.
I will now probably crossfade between the normal and the "shifted" signal with the output of the resonance-knob - so: problem solved - and I learned something.
By the way: I just wanted to start eating chocolate out of frustration when your answer came - so double-thank-you!