Do you have a Uni-Syn carb synchronizer?
Try disconnecting both linkages and adjust the carbs to idle and then hook
the linkage back up.
(leave the return spring(s) on.
The Uni-Syn will alow you to set the first carb and then 'match' the second
carb to the first.
Jeff
"Bill" wrote..
> Just installed a Offy duel carb setup on my Lark. I cannot get it to
> idol under 1300 RPM. Any help is appreciated. >> Stay informed about: Duel Carbs Six