I have a Dewalt 717 mitre saw with a Freud Dibalo 10" blade and for the llife of me I can't figure out why, when making straight cuts, they come out crooked. I am going slow, clamping the workpiece down tight, but nothing seems to work, every piece comes out the same crooked way. I have re tightened the blade, but it was already tight. The saw is only about 3 months old. I did a blade alignment test and it appears to be straight. I appreciate any comments/suggestions. Thank you.