I recently bought one of the Rockler phenolic resin zero clearance inserts.
However, now whenever I run the saw, there is a high pitched sound coming from the blade "rubbing" against the sides of the insert whenever the blade is at any height above the insert.
In addition to being annoying, I am concerned that this friction will suck power from my saw.
-- So, is such noise (and associated rubbing) normal?
-- If not, what can I do about it?
(I was thinking about widening the slot on one side by adding a piece of paper as a spacer to one of the washers but am not sure how to do widen the other side. Also, not sure whether this would defeat the purpose of a "zero clearance" insert)
Note my saw is pretty well adjusted with runout of just .001" (actually, I imagine that the reason I am having this problem is that the runout is so little since with a larger runout or wobble, the slit would have been cut wider)
Thanks!