Hello jegssr,
When you say binding, do you mean the alignment binds while it tries to actuate at front and rear directions? Or is it binding at the final linkage at the fuel injection pump?
Often linkage will bind when one, single washer is either missing or too many on one side and not any on the other. Yanmar makes a fairly sturdy throttle linkage but it's also critical everything, from cotter pin to washer sides are properly assembled...and who knows, maybe someone put it together just a little bit off and only now are you experiencing problems?
If you need a parts index drawing of your assembly...just give me a holler
.
Mark