Help: Retrolink Gamecube Controller C-stick Issue

[logan081291]

Hey there! I am using a retrolink gamecube controller, and everything on the controller works great except for the left and right c-stick functions. At first I thought it was the controller, but when I tried it on sixty force (majora's mask), it worked perfectly fine. I am currently running Dolphins 5.0-rc-1 and am on OS X 10.10.1. I have the C-Stick set as: Up -- axis Rz-, Down -- axis Rz+, Left -- axis Z-, Right -- axis Z+. The Radius is set to 100, and the dead zone is currently set to 3 (I have also tried 10, and 25 for the dead zone with no luck). The red dot in the box is moving when I set the up and down c-stick functions, but just barely shaking when i try setting the left and right c-stick functions.  Any thoughts here? Thanks in advance!