My Sears Craftsman (2002) 944 has rust on top body and as much as I want to keep it there is a hole which will only be getting larger. So I have decided to purchase a new mower asap. How do you prevent rust? After using I hosed the top and underside and left the mover out on the lawn to self-dry before putting in the garden shed. Did I need to dried it with a rag or old-towel.