Awwe Crap!

[ford38v8]

Cap, the "spring scale" referred to was a KRW tool made for Ford. When I used it on mine, the reading on the scale bounced radically while turning, preventing any kind of accurate measurement. After fooling with it for several hours, I did get the preload set by guesswork on the scale, but had no confidence in the value achieved. I took it to a flathead guru who used the vise/spin test, and told me I had indeed achieved the desired value, which surprised me.