Seasons greetings all. Lately I am getting uncommanded rolls introduced by my AP. The D100/D120/AP74 suite has always functioned perfectly, and I have not altered any parameters nor changed my flying techniques. The roll occurs in level unaccelerated flight, in all lateral modes, and approximately once an hour. This was a topic some time ago on the forum, and I am hoping collective accrued wisdom can lead to a quick fix. Rgds Mike.