Hello group. The problem with the rotor has been fixed. Turns out the gears inside had frozen on their shafts. A little penetrant and easy persuasion got things running smoothly again. No parts, just time. This rotor sees intermittent use as its attached to my portable rig, and must sit outdoors.There was a little bit of water in the bottom of the case, as the drain hole was gummed up a bit. I filed it out a bit and regreased everything and she works like a charm again. Thanks to all for the replies and the help.

73 de Shawn - N1HOQ # 33948