Accelerator control spindle jams against motor

[Graham O]

Thanks for your suggestions.  My control spindle (Austin's terminology) hits the back of the barrels at about the point where a frost plug is placed.
In my case, the spindle is notched to locate the levers at each end.  I will try rotating the spindle to find a happy clear spot and then add new notches to enable the levers to be put at the correct angle again.  Much easier than making a new spindle.

Thanks again folks. Wonderful to get overnight help into New Zealand.