Schumacher SB to BB Biscuit mount not fitting

I ordered some Moroso solid biscuits to see how that works, maybe just solid in the driver side.
The Moroso mount I used for a SB install was about 1/8" taller than the factory biscuit. That might help.

If you had to cut the rubber biscuit for the install you will need to do the same for the solid one. That would open a new can of worms.