Recently I have had some problems with the 737. The autopilot disconnects every few minutes during the climb and cruise. There was no obvious reason for this; it did not seem to be linked to sudden changes of wind.
I also notice that the trim during flight is very far forward, right on the front edge of the green zone, although I set it as per the FMC setting (3.4 on the last 2 flights, for a GTOW of 47.5 tonnes. When the AP disconnects, the plane wants always to climb, as if its tail heavy.
I am using an Saitek X52 pro stick/throttle, and wondered if there was some problem with it, so I dis-assigned the 2 trim buttons on the stick (also the a/p disconnect button on the stick) and reassigned nose down/up trim and a/p disconnect to the keyboard, but the problem is still there.
Any help greatly appreciated - I love this plane!