Here's what caused me needing a tow home last week, the geometry for the pull style slave cylinder was off and it ended up bending and breaking the rod on the clutch fork side.
Saturday a friend came over and got my pinion angle shims installed while I built a new bracket for the slave cylinder. Got it all built, painted and installed and had my buddy press the clutch in while I adjusted the slave cylinder. After pushing the clutch in 3 times, the rod was bent again. Bummer.
After some brainstorming, I will be adding a heim joint on either end of the slave cylinder so it can move around a bit while the clutch fork operates. Crossing my fingers!