I plan to replace my chainplates and wonder if anyone has specs for them. I was able to get a rough measurement of 4 at 12" and 2 at 14" to be made in 316 SS .250 x 1 1/2 these have lasted 37 years. There is a slight bend at the deck what degree bend? Two are showing rust streaks at the bolts from water seepage so guess I will do all of them.