Hog 4 Remote Focus

Hi all,
I am running Hog4 PC on a wireless PC tablet with a stylus and want to update focusses only.How do I set the Trackball for Ortho mode on HOG4PC?
The issue I seem to be having is the trackball sensitivity.Pan corrupts Tilt and Visa Versa.Any tips or tricks to make the trackball smooth is appreciated. Encoders are waaaay sensitive. Crazy idea...Is there a way to send P and T function to the cursor arrows?
thx
g