Casting deck on 23 question

[take a potter]

My step on my 1975 is 10 5/8" high and there is a bow in the vertical, port to starboard . The high spot/peak of the bow is 8" down from the top of the casting deck. From the top of the casting deck down to the 8" mark the casting deck sits back(toward the bow) from the vertical by 3/4". From the peak of the bow to the sole, it is out of plumb about 1/8". Hope that gives you what you need, If not let me know what else could help. My deck should be intact until next week.