This is in addition to what Moldmkr has stated:
1. If your WH is an Atwood, it does not require an anode rod. In most cases, the plug that you took out should be a nylon one.
2. The tires should have something underneath them. A good protectorant in addition to covers would be the 303 Spray which is available from Camping World. We also have the air pressure at the max when storing.
3. We lower our jacks to where they take some pressure off the tires. I will occasionally spray the shafts with this product sveral times a year.
Jigaloo There was a previous post on using it.
http://irv2.infopop.cc/eve/forums?a=search&reqWords=jigaloo
3. We try and take our couch out for a 1hr or so drive monthly during the winter and also run the gennie under a slight load at the same time.
4. I would also recommend putting Stabil in the gas when you get ready to store and runn about 15 minutes to circulate.
5. Disregard all of the above and go South for the winter months.