I like to listen below the BCB and this problem is very evident as there are no pre-selectors down there; using either a Pixel loop or 80M dipole.
Two 0dBm BCB stations will mix after the pre-amp (in the front-end protector ESD (diodes)).
There are several BCB filters available that may fit in the loop of OUT-A and IN-A (now called LOOP-A in software). This filter is very effective. Sorry I don't have the model information available as it is remote at the moment.