Dewalt DW718 Miter Saw Fence Alignment
With a tool so tough as Dewalt's DW718 12" double-bevel sliding compound miter saw, it is no mystery that the sucker is going to get a little kicked around. Of course, the regular abuses of jobsite life will wear on the tool and eventually it's going to require a bit of tinkering on your behalf. Don't fret though, said tinkering is generally simple with the right tools and a bit of patience.
It may surprise you to learn that the leading cause of inaccurate miter saw cuts is actually a misaligned or warped fence.