Finally! Accel has published their Injector offsets. However, the one for the 150121 is not there. The 24# injector may be close enough. Its a bit more bias than what I "stumbled" on with my testing. I'll try it out once I get the car back on the road next spring or on a nice sunny day.
http://www.accel-ignition.com/produc...injectors.html