I checked the clutch linkage and throw out bearing while my dear wife moved the clutch in and out a bunch of times, fast and slow. It works smoothly, no binding or anything. I put a bit of grease on the throw out bearing per the service manual. Changed out the synthetic lube for conventional. Checked the clutch pedal adjustment and it was still in spec. Took it for a drive and the jerkiness didn't completely go away but seems to be better. May also be that I am getting used to it. The jerkiness only happens when starting out from a dead stop. Also checked the u-joints. The front one is the tiniest bit loose, but no clanging or vibration. Could that be the problem?