another glitch became obvious today as we were holding the boat while swimming on a shallow sandbar. The dolphin striker has some vertical play under the mast base (about 1/4" in and out the crossbar), even though the base itself doens't move (or very little)

isnt' the striker screwed in the base? that would mean the alum. threads in the base are damaged since the base doesn't move with the striker

can you replace the base by drilling out the 4 rivets, push the stiker up and then unscrew the base?