My wheels arrived in the same condition. After several operating sessions, they smoothed out and have never been a problem.
Mine were flattened just by the nature of the beast.......the weight, when it's out of the water, almost completely rests on those wheels and they will distort.
If you store it with the weight on the wheels, the same thing will happen.
Save your pics and send them a note and then see what it looks like after it's been run for a while.