Regent Aqua-Tech-5 Impeller Housing

Hi,

I purchased a Regent Aqua-Tech-5 from Wal-Mart (similar to Eclipse
System 6) a few days ago. The impeller housing does not fit into the
pump/filter assembly. The width is correct, but the length is about
1/4" too long. The impeller housing looks slightly different than the
drawing in the owner's manual. The part that came with the kit has
radiating ribs around the outer part of the semi-circular end (drawing
has none), and the bundled part lacks horizontal stubs on the sides to
mate with the horizontal notches on the pump/filter assembly.

I called Aquaria this morning, but the customer service queue had 18
people ahead of me with estimated wait of 72 minutes. So I sent e-mail
to customer service.

Has anyone else encountered this type of mismatching parts? How
responsive is the customer service? I'm thinking of just taking the
kit back to Wal-Mart for a refund.

Regards,
Kevin