Demon Carburetor issue
I assumed in my earlier post that yours was a Down-leg booster model. If so, here are the as delivered specs...
# 1402010VE
Fuel:Gasoline
Number of Barrels:4
Carburetor Flange:Square bore
Choke:Electric
Secondary Type:Vacuum
CFM:750
Fuel Inlet Dual
Primary Jet Size:76
Primary Power Valve (Hg):6.5 Hg
Primary Discharge Nozzle Size (in):0.031 in.
Secondary Jet Size:83
Primary Outer Air Bleed Sizes Included:70
Primary Inner Air Bleed Sizes Included:39
Secondary Outer Air Bleed Sizes Included:70
Secondary Inner Air Bleed Sizes Included:39
Carburetor Finish:Silver
Ford Kickdown:No
Booster Type Down-leg
Throttle Linkage Type:Universal