Thanks Bentley.
Tried another Bun recipe today.
The recipe makes 9 buns, heat oven to 400, put buns in, and reduce to 375.
Bake for 17 minutes.
Also says brushing butter on top is optional.
So, the 5 buns (in one bun ban) on the right were brushed with melted butter, right four (in another bun pan) were not.
Half way through the bake, the pans were swapped top to bottom, bottom to top, and rotated front to back.
So this was the result: The ones brushed with butter did not brown on top, and were over done on the bottom.
Ones without the butter came out perfect.
The two in the center front are flipped over.
Pretty strange...