gsnPolarLabelFontHeightF= .025 changes the font height of the lat/long labels w/o changing the gsn* string text.
gsnPolarLabelDistance = 1.08 controls how far away from the circle the polar labels will be drawn. These labels are not a tick mark object. They are are text that has been manually added. A determination was made as to how far away from the edge to place this text. When the ability to blow the text up was added, it ran the 0 and 180 text into the circle. Note that this resource moves all the text out, and not just the 0 and 180.
lbLabelFontHeightF, will enlarge label bar labels.