Thanks for the information.
Frank - It wasn't just changing the numbers. The original ASCOM change allowed the focus motor to switch between clockwise and counterclockwise, so I figured that would fix the problem. Of course thats been dropped in the latest driver so I've contacted the vendor.
Buzz - The documentation says to attach the motor to the fast side (1:1 side) of the focuser. So, thats why I didn't switch it.
Assuming I can't change anything is there a problem just setting the backlash to "OUT". I know it will then apply backlash to every focus change but I should still end up in focus - right? Thanks for helping me through this.