QUOTE(partwerks @ Nov 26 2011, 04:26 PM)

Does the Delrin pulley make the clutch work smoother?
Maybe a little. The delrin should roll on the busing a tad better than the stock hard plastic. It is a harder material than stock and thus less prone to the wear and nicks. Most original pulleys have probably seen better days by now, so Mark's product is low cost and better than original.
The Terry Cable on the other hand should make it smoother, as it is running in a teflon sleeve, and the cable wind is much more compact which results in less friction. Do NOT lubricate a Terry Cable.
I am currently running a stock cable with Mark's pulley, and it works fine. I bought a Terry Cable years ago, and was about to install it a couple of weeks ago when I discovered that the ends were installed opposite of what they should be. I called them up, told them what the problem was and how long ago I bought it. They said "no problem - send it back and we will fix it". I plan on sending it back this week.