GP3 with FAT switch stuck on

So I have a GP3 preamp that has the FAT switch always on issue. I understand that there is no way to fix the switching of the fat function, but is it possible to change the components (resistors and capacitors) in the fat circuit, to neutralize the fat effect as if it were bypassed? So essentially, if the fat switch worked, you wouldn’t hear any tonal change when fat switch engaged or disengaged.