Kyle wrote:

Anyone have any reasonable solutions as to how to
raise the center so that water drains and doesn't lay there?

Haven't seen this posted yet as a solution.

It's not elegant, but it's a quick fix: Drill a small hole in the
gutter (1/8", maybe 3/16") in the low point where water is pooling.
This will give the stagnant water somewhere to go (ie - down) but
presumably when you get rain most of the water will flow out to the
gutter downspouts the way it should.