massive reconfiguration time again.

Phreakish said
At least one video on the 'tube shows the air door opening what looks like 'all the way' with a snap of the throttle and no load:

Sounds like maybe those door springs should be loosened a good bit?

Yes it jumps pretty high pretty fast with two primaries... It's kind of hard to do that with two carburetors at like to take off...