After the first wavy plate included with the Bench Dog ProMax Cast Iron Extension Table, Rockler sent a second Bench Dog Proplate that cannot be made flush with the table top. The corners are even, but there is a dip on one side and a crown on another. The real-world impact is the workpiece either catches or drops as it passes over the seam between the plate and the table top. The table top is beautiful and dead flat.

Am I wasting my time with the Bench Dog ProPlate? I guess for the $20 difference ($329 for the table and no plate, $349 with the plate) I shouldn't expect much. Is there another good, dead-flat brand of plates that fits the Bench Dog ProMax (8 1/4 x 11 3/4")?