Yesterday I had a problem of the blade sleeping out of the top clamp.I tried all the remedies, sanding blade cleaning the blade end with no luck. i slowed down the speed and watched the blade, it just slid out of the clamp sideways. I went to my back up saw , also a Dewalt and traded the clamping screw and it worked fine, I have about 3000 hours on the saw tomarrow I go to the repair shop and buy a new clamp knob at a cost of $10
IKE