I'll give the choke a try and see where it gets me.

When I refered to "pulling" the throttle what I mean was this. I set the throttle adjustment screw so that it would hold an idle when the throttle is fully closed (Ican kill the engine with an electronic kill switch). The engine *seems* to return to the normal idle speed when I "pull" the throttle further closed (it doesn't really move much since it's up against the screw).

It's not a linkage issue, the engine is currently on a test stand and there is no servo or linkage hooked up to the throttle, we're adjusting it by hand.

Thanks for the reply.

-Rick