I converted my throttle linkage from a bent rod to a threaded rod with ball stud ends, and now it is much smoother and adjustable. My local hardware store had a bin of 'miniature tie rod ends' that bolted right into the holes. I used 10-32 threaded with ball studs between the carb (Rochester B) and bell crank, and cut 1/4-28 threads on the throttle rod for a larger one. The whole setup cost me about $15 with a new spring. It is much smoother than the old setup. I used a locking wingnut to anchor the return spring on the rod.

I had issues with the old setup because of the proximity of the exhaust studs and the oil filter lines (this is a 261 with 1/2" npt lines). This solved them nicely!

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