Replacing cab corner and B pillar - is this gap normal?

[ItWillBeSlow]

All,

I am almost done with all my passenger metal work. I have replaced the bottom of the A/B pillars, the inner rocker/edge of floor, cab corner, and am currently "working" the rocker to get it to sit right.

After finishing the cab corner, and while working on the rocker, I noticed this 1/4" gap between the cab corner and the bottom of the B pillar. This is completely open to the outside. The other side is too rusted/bondo'd for me to compare to factory. These are tri-plus parts that appear to fit fairly well otherwise. This is my first attempt at this work and all seems to have gone well do far, I believe everything to be in the correct position and fairly well lined up. The B pillar/door seam appears straight all the way down and does not appear to be kicked forward at all, especially enough for this gap.

Ideas?