I've been having more burn marks from my table saw than I feel I should. I read that microscopic vibrations in the 10" blade could be happening, even though it's a sharp Forrest WWII, so I ordered a 5" stiffener. It's really just a precision machined tool steel washer. The blade is held in place by a much smaller (~1 1/2") machined washer and a large nut. That's universal. My ?: Do I install both the large stiffener and the stock washer or leave off the stock washer?