Happened to me when i got my em home. The tilt plomb was bumped around and of course was still making contact with the ring around it. Moved it so it wasnt touching and sweet!. Not sure about ss, are they the same?
most likely the problem - or the tilt ball (in the assembly) is all the way to the back of its travel - which is causing the tilt switch to stay on. The ball should be rolled to the front of the machine - if that makes sense ?