Thanks Rayood! Sounds like it may end up being a bit more art than science, huh? So I guess the push rod gives you the gross adjustment, then the cable adjuster is where you fine tune it.
By the way, I managed to buy the Barnett clutch cable from Arlen Ness after all. I went over there and spoke with the same guy I had talked to on the phone before, and mentioned that it just seems strange that a place that builds bikes does not have any clutch cables. The look he got was like a dear in the headlights, and then says "damn, I keep forgetting that we've got parts upstairs". I then handed him my old cable and he comes back with a Barnett one with the exact same length. He apologized for not thinking of it earlier, but hey, I was happy to get the cable in my hands, so it didn't matter to me.
Now I got to get ahold of another ferrule. I KNEW I had to take care not losing that little thing, and then what do I do? Of course I proceed to lose it. It's always something! :bang: