i have a 997 walbro carb where the end of the throttle shaft where it connects to the throttle linkage got damaged. so now i have a replacement throttle shaft and am trying to put it in. the problem is i get binding/sticking when the throttle plate is attached to the shaft and i turn the shaft (like the throttle linkage normally does). it works silky smooth without the plate but with it it is sticky. everything looks ok, i can't figure out why this is happening. anyone fixed this before?