Dave,

I was just given an older H16 yesterday after work (long story). I looked at the mast base and mast step to check out the wear. I had the same thought you did... put a cap over the stops. I thought of gluing one in place.

I'm not sure of the numbers, but I might be able to go to my local Hobie dealer and take a look at a set to see what the new parts yield as far as rotation angle is concerned. I need to spend my boat allowance on other more imortant items before I replace these.

On second thought it may be easier to ask the question on the Hobiecat website forum.