Brake Pressure Anomaly

Hello,
I'm working on updating the old DTM FA-1 and GP30 units to current standards, and have done most of the sound and texture work, and now I'm working on some basic physics updates, and noticed this is what the brake needles look like...
Without consist they look right:
With any other loco, or cars, the equalizing reservoir is messed up:
Any ideas?
I'm working on updating the old DTM FA-1 and GP30 units to current standards, and have done most of the sound and texture work, and now I'm working on some basic physics updates, and noticed this is what the brake needles look like...
Without consist they look right:
With any other loco, or cars, the equalizing reservoir is messed up:
Any ideas?