Thanks guys,
At this point, I think I will modify my original plan. I will bite the bullet and remove the aluminum skin. Then remove the rotted wood, and reframe, and reskin. Wood that cannot be easily removed and replaced, if only slightly affected ( as in the two rear corner posts ( I hope)), will be treated with some epoxy.
We are getting into winter, actually, right now we are in a "winter storm watch" and having rain, sleet, and snow.
That brings to mind questions about the epoxies and temperature. Are some of them more appropriate for cooler temps than others?