Same thing happened to me. The top bearing in the gearbox was rusted solid, both in the motor gearbox and the manual furler.
There is a list of the bearings used somewhere on the forum. You can do this overhaul yourself if you have a bearing puller. The bearings are pretty cheap.
I'm going to start hitting the top bearings in the gearbox with a "wet" bicycle chain oil. This top bearings does not get enough lubrication from below, but it does have some saltwater penetration.