It turns out that .006" clearance on the throttle shaft isn't much of a problem. I learned a lot about SU's, probably fixed some minor carburation problems but didn't solve my poor running at low speed. I started back at square one yesterday and replaced my pertronix ignition with the original breaker points. With the original point installed I couldn't get any spark at all. After a little diagnostic work, I concluded that I had a bad condensor coil. Replaced the condesor, set the timing, and the engine runs like a champ.
The new Pertronix III unit doesn't work for me. It's great for starting, but the car runs very poorly at low speeds. I'm sticking with points igntion for now.
