Single screen Skyview system without the dedicated auto-pilot module. when applying power to the servos, the pitch servo will engage for 5-10 seconds and then disengage. doesnt matter if the system is booted up or not. Happens any time power is applied. Aircraft was purchased with inop autopilot and was not wired correctly to the network (both twisted pairs never hooked up). AP now working properly with no inflight problems. Just have this powering up quirk to contend with. Any ideas as to what the problem is and what to do?