Maybe an odd thought, not even sure the possibility and it wouldn't spontaneous occur, but is the knife wider than your blade? I’ve often wondered that when I’ve picked up a thin kerf or ultra think kerf blade, if there will be a problem. That knife seemed real close to the normal blade width. On the Sawstop there are side channels it locks down in to that compress when you lock it down that keeps it parallel to the blade. Also wondered at times if that mechanism could get out of whack as dust could accumulate during cutting and removing of the knife when doing multiple blade changes.