What holes are you in on the Servos?
I just switched mine to the center holes on the servos for more torque, I was on the outside hole. The inner hole does not give you enough movement, but the center is perfect. I've upped the sensitivity a bit on my 6, but like Jesse says start out with default.
I'll give you my 2 cents also on the Dynon autopilot in an RV. What I notice is that since the RVs have such a broad speed range it is hard to have the autopilot set for the entire range. For example, if you set everything right for your cruise speed your good for cruise. Now you try to shoot an approach at 90kts and the sensitivity is too low. You'll especially notice it in roll. Mine was rolling back and forth and missing the course till I shut it off and manually controlled it back onto the approach course. I upped the sensitivity and it worked much better. Then back at cruise it was too sensitive. Just my observation, your experience may differ! But I will say I love the Dynon autopilot works, and would never go back to a plane without it.