I was checking the blade for vertical squareness on my Unisaw and found that on one side it's perfectly square but the other side isn't. When I raise the blade to it's highest position, place a fixxed-blade tri square on the left side (throat plate removed), it's square. But when I place it on the right side it's out of square at the bottom by .015. I'm checking from the same spot on the blade, just opposite sides and not on a tooth. Can't, for the life of me, figure out why this is.

Thanks for any help or suggestions as to why this is happening?

Joe