X86J4125800 Odyssey GOPIO Output sourcing issue

In this forum, it was stated that the 40 pin GPIOs can source or sink 3 mA

I am only trying to get 0.3mA.

My guess is that the outputs I am having issues with are in sink mode with a 10K pull-up since I am getting half the 3.3V with a 10K load.