Hi This question is for the carb tunners ,
I am trying to tune my mighty Demon 850 GC carb .
right now the engine set up is pretty good , but i would like to ask how could i tune the very light throtle circut of the carb , because the idle is clean can adjust all 4 mixtue screws to pretty much any a/f ratio i want currantly the engine is running like this .
Idle set at 14.0 a/f ratio @ 185 deg water temp
when you open the throtle the a/f gos to 11.5 11.7 this seams to rich
if u drive the car at steedy speed it will run 11.5 all the time
the faster you go with out flooring it i will start to lean out to 13.0 .
When you floor/mash it in forth gear i have it at 12.9 -13.2 a/f

i have tried smaller main jets on the primary side down to 77 from
stock factory 80 jet and it seams to run sluggish with that
jet .so went back to box stock form and runs good just pig rich at say 2500 rpm in fourth up to 3000 rpm .

what can i do to lean the transition circut ? should i change the IFR
to a smaller one?

or put smaller main jet and open up pcvr to say 72 from 65?

what do you guys think ?