In the meantime you could make a plastic Chip similar to the Hobie 16 the shoved into that mast base to prevent further erosion of the aluminum.
i go through a few dozen gator aid lids a year. I have used hobie chips in the past but they easily squirt out during stepping. Gator aid is perfect.
as per all the other (ideas, convert, cut 1/2 off, etc... )
I appreciate the ideas but will do my best to find a replacement before I go that route.
Will keep ya posted
