Problems with rear guard on HRS2164PDA

I just purchased a HRS2164PDA. Is the rear guard supposed to be just a flat piece of plastic that sticks out from under the rear of the mower deck? It is flat and stiff with sharp edges and it just digs in to the dirt any time I try to pull the mower backwards. I have had other push mowers with similar guards that had a more rounded profile and were more flexible.



Is there an adjustment or something that is needed?