I have an old Yamaha EF1000 generator. Not the EF1000A, not the EF1000is, the old, block-style, square blue one. I need a service manual for it. Amazon lists it as available, but then out-of-stock & back ordered when you add to cart. Some websites read 'obsolete' and they don't have it, either. Does someone have one I could read/borrow/buy?