[quote=Wolfman]That is one of the most common things to break on a Nacra. Most base castings you see used for-sale have that type of damage. Usually it happens when you try and unstep the mast for the first time and don't rotate the mast 90 degrees it either bends the dolphin striker rod or breaks the base casting at the pin hole. You can likely sail with it broken as long as the cup that the ball rides in is intact.
The only problem is without the pin in place during stepping and unstepping the mast the mast can jump off the ball at an inopportune moment. I've stepped mine with and without the pin in place without too many difficulties but that doesn't mean it won't happen. Luckily the Nacra bast casting is universal for all boats and is still available for about $50 from a Nacra dealer or one of any number of online parts dealers.
D.[/quote]
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