I bought a troy-bilt push mower at Lowe's, and when I adjust the deck height, the deck is actually higher in the back then the front (when adjusted to the same notch). At first I thought this was an optical allusion since it has large rear wheels, but it's about 1/4" or so higher in the rear.

How will this affect mowing performance?

Should I give up and return this mower?

Model # 11A-B29Q711 .

Thanks.