If you have the two tooth steering box as I suspect from the picture of your Coupe, make sure that the steering column cover is "bottomed out" on the gear box. The clamp hides the position of the cover. Just a small distance off may make the difference in the clearance between the starter rod and the throttle rod. As Ted indicated, you can also make finite adjustments of the spark and gas linkage when the clamp is loose. Gar Williams