I have got my wrist wrest, like others, mine is also cut incorrectly. Mine is too big and there is a cut line in the wood where it should have been cut.
You can see what I mean with the indent in the wood on the left side. The front and rear are both off by .1 in (.75 sloped down to .4). My wrists rest on the bottom edge, the .4 does not do much in the way of comfort.