I recently purchased a Hunter 29.5 (1996 model) with a Furlex fuller. Prior owners apparently didn't believe in maintenance. I don't yet have a problem with the Furlex, and I want to avoid any future problems by servicing the furler. How do I lower the Furlex in order to wash and lubricate the upper part? What type of grease do I use? Any advice on servicing the Furlex will be significantly appreciated. Thank you!