Bottom is not flat!

I love my 4 qt. pressure cooker, so I bought a larger one so I can seer larger pieces of meat, or quickly brown stew meat. I also thought I could heat the pan more quickly if could use my larger burner. The design of this pan is not good for either of those things. The pan is 10" wide at the bottom, which would have been great for a larger burner, but the bottom of the pan has two levels. There's a "bump" in the center of the bottom, so the part that touches the stove is only about 7 1/4". The "bump" is on the inside too, so it doesn't have a flat bottom on the inside either. I'm returning it.

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