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You'll find that all or most throttle assemblies have been bent at some point with folks removing engines, bodies and farmer fixes. I went thru 4 or 5 assemblies to create my own very neat linkage that clears the firewall and has full use of range with both foot and hand throttle controls. This takes time and patience to adjust, remount, experiment, remove, adjust and remount to get all the working parts moving freely without hang up. A little bend or filing goes a long way, don't get impatient. You will feel so much happier in the long run when the "A" functions normally as it was intended.