[quote=MN3]there is the perfect item for your mystere mast ball
a 20oz gator aid lid
there is a Stainless steel component to the old mystere ball - there should also be a stainless steel insert in your mast base. this is your actual pivot point.
the ball being grinded down isn't that big a deal -most of the pressure is on that SS pivot point and grinding away will stop at some point.
my mysteres are both ground down like this
i had my beams worked on a few years ago (grind down, new alum added where needed, painted) and i asked my spar builder/rigger about building up my mast ball - he said "don't do it - not worth it - will grind away again and your SS is the pivot (he owned several mystere's in his day)
the only time it becomes a real issue is when using a stepping pin may be unusable and line needs to be used instead since the mast is a bit lower on the ball[/quote]
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