A bent box.

[Press_Run]

Hey guys!

One of the boxes I've received has a big circular bent outward in the back but have no idea was get it straight.

Any good ideas to flatten this bump? 

[guyjin]

Flatten it out, if you can, and stack your encyclopedia (or as many big books you can find) on top of it for a few days.

[Turbo D]

lol, sounds like my Legend of Hero Tonma box. I believe it mutated as an after-affect of being sealed for too long (not by me of course!)

[Nazi NecroPhile]

Put it between a couple sheets of heavy weight paper and iron that sucker.  Make sure you don't crank the heat on the iron though, or you'll eff it up but good.