6x2 set up help

having trouble finding any info on tuning my 6x2 setup. i'm running progressive linkage with the centers as primary. it will only run with the chokes fully closed. the idle circuit has been double checked to be clear and i cant seem to find any air leaks. any help would be greatly appreciated, gary

 

Check my signature. Good luck..

 

sounds like your throttle plates in the outside four 97s aren't closing..and taking to much air. With the chokes closed, that must mean that your getting to much air..
Check and make sure the linkage is closing the outside 97s.
Hope this helps..With more info, might beable to help more..
Duane.