The mini titan is a nightmare to set up with the reverse polish pitch. What I finally did was set my radio to all normal and +50 the did one servo at a time, checking to make sure it moved the right way for pitch and cyclic, then I moved on to the next servo. I have Hitec servos and a Futaba radio but here is what I finally ended up with.

Rotation
channel 1 = normal
channel 2 = rev
channel 3 = rev
channel 4 = rev
channel 5 = rev
channel 6 = rev

Swash
channel a = +50
channel e = +50
channel p = -50