The bottom part of the tub (where the wheels roll) on my Whirlpool WDT780SAEM1 are too narrow for the rack
Near the front of the wheel "track", there's a part that flares out (in, technically). I suppose it acts as a guide - see attached pic
But when the wheels of the lower rack come in contact with these flared-out sections, the rack sticks; almost stopping it
Is it possible that the tub is warped? Can I get a different rack, whose width is 1/4" ~ 1/2" narrower?
Can I spread the tub a bit without damaging it?
[btw, this has ALWAYS been a problem with this dishwasher, and Whirlpool refused to replace it and, and offered only to replaced the tub, but "it basically requires an overhaul and something else might get damaged in the process"]
