[john hall]

This is a NEW mower? Couple things come to mind. Make sure the rear tires are the same diameter, a dealer I know had this issue once with a larger mower, they caught it while the lawnmower was still on the showroom floor.

I've been in manufacturing for almost 35 years. It's possible something is wrong in the manufacturing/welding/stamping of the decks--it happens. Same dealer had a large 60" deck that had to be replaced, it was warped from the factory.

Did Cadet replace the entire deck assembly or just the shell? If they replaced the entire deck, here is an idea. Assuming you have 4 gauge wheels, check the deck for level with it unhooked from the tractor. There is a cheap plastic tool made that goes under the lip on the deck to level decks by checking blade height. If all checks the same here, then sounds like you have an issue with the lifting mechanisms (including a warped tractor chassis) or varying tire height--hopefully its as simple as the lift mechanism is improperly adjusted.