I've read through the troubleshooting guides. I believe I'm seeing some odd slicing behavior with respect to overlaps.
25% outline overlap
4 perimeter shells
here's part I'm printing
Infill layer, notice both circled areas have 25% overlap
Solid infill layer, right circle has 25% overlap, left circle has a gap. While this area isn't visible once print is done, this gap allows for uneven shrinkage, which affects the finish.