I have a jig with magnets that I got from Grizzly that's almost foolproof, in that it sticks hard to the outfeed table and magnetically draws the knives up so they can be tightened.
The "almost" is that the rig depends on scribing a line on the fence at top-dead-center, and to find that you have to use a piece of wood and roll the knife assembly back and forth until you judge the knife to be at top-dead-center.
That seems to me to be difficult to do precisely. I think I did it as well as I could, but it could be a few thousandths off.
So, the question is: How important is it that that scribed line be EXACTLY at top-dead-center?
Any tricks for getting it exactly there?