I guess this is answered in the next question and the solution is here. http://www.captainsim.com/cgi-bin/kb.pl?qid=4897

I searched the KB using the terms pitch and autopilot and did not come across this solution.

I applied the patch and while the pitch knob now works it hunts allot as opposed to holding the pitch you set. i.e. I set 5.0 degrees pitch and the airplane hunts between 4.6 and 5.6 until settling in a minute or two latter on 5.2.