Why is my zero clearance insert getting wider?
I've recently purchased a table saw that was used, although it appears to be in great condition. It is my first table saw, and it's a Sawstop contractor model. It came with a new zero clearance insert, and I followed instructions to set it up. Doing that was easy, and the slot that the blade made was skinnier than it is now after doing approximately 25 cuts. I thought this might happen if the blade came loose, but the blade on the saw is certainly tight.
The slot width didn't get wider in all parts, which is why it's easy to see the change. For instance, I was cutting some 1/4" MDF, and had the blade really low, and it seems like that is one of the areas where the slot is wider. The original slot is about 2mm wide, and the wider area is about 2.5 to 3mm wide.
The throat plate itself is not loose or able to wiggle left to right, or front to back for that matter.
What could be the reason why the slot is getting wider? Does the blade ever flex?