Due to the higher than expected cavity pole we are using the first boost stage (pole at 100 Hz and zero at 1 kHz) as part of the compensation. The second boost stage is too high in frequency. This morning we modified the second boost stage to be identical to the first one with a pole at 100 Hz and a zero at 1 kHz. This is serial number S1102630. In detail:
The removed parts are in a bag taped to the inside of the chassis.