Thank you all,
Ralph' The white spots in the picture are just a weird color variation no dry rot at all..I saw them right away and checked them first. I don't have a moisture meter but it is very dry wood indeed,
it has been very wet here recently though and it has been soaked through for several days. I'm going to try backing it with a cotton backing (like khaki) and treat it as a board bow.
Jawge Thank you I'm using your board bow method as a guide at hand all the time.
Pat I know all about how hard it gets I've built my whole house from it and other woods like it and have hand driven about 350lbs of 16 penny nails by hand with the help of ALOT of bars of soap
I'll be sure to exercise it carefully and alot.
Lennie Thank you for all the advice and support.
Well here goes nothin, I'll try to keep pics up as I go crossing my fingers.
Tony