an A12 is at the very bottom end of workable for the 32/36.
you'll probably have idle problems ( too high or it dies )

what it comes down to is the 32/36 is not the best carb design.

I'm learning to have some respect for carbs like the SU's found on the roadster.

I had problems with the secondary sticking open slightly and that would make the car run all schitzo.

I gave the same carb to some kid after i dug it out of my trash trash and it worked fine on his over 2 liter engine.

Some people love them. Personally I really like the variable piston carbs - especially in LPG apps.