Another update, after probing and banging on the stringers guess what I found, rotten stringers. I started to dig out one its not plywood looks like its 3/4X8" pine, hard to tell what type of wood as what was left was wet and dark. Anyway I have a lot more work in store for me than planned. I don't know how much I can do as winter is almost here. I may shrink wrap it and try to work under the wrap. Dennis
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