On this site, there is a forum called "Archives"
In this forum is a post called "Emergency RB Designs Jetting Info Needed"
It contains 158 posts of guys who designed, dyno tested, field tested, modified, plotted and documneted, and who changed brass daily to get real world results at different altitudes, with different fuels, and under different load conditions.
It has been viewed over 5,075 times.
My suggestion is to stop wasting time speculating & start reading.
BTW, I have a tractability comparison test of CEK, CEL, BEL, and BEM needles when tested at 0 to 1/2 throttle under moderate loads in the works. Also tested flywheel weight as well; report coming soon.