Looked at the break, clean up the area where it was deformed.
Tomorrow I'm building a "bong" for the vacuum pump and mounting it on a base with fittings, Then bagging out the first sleeve in carbon fiber.
The sleeve will have two sizes - on the main mast section the opening is 50mm and on the top part it is 55mm. There was a 5mm hard step at the break. Usually you do not want a hard step (spot) in fiberglass it is better to taper off any size difference. Case in point here at the break. It created a hard spot in the mast. It is not going to be an easy fix but I can come up with something.
Mike Shappell www.themanshed.com TMS-20 Builder G-Cat 5.7 - Current Boat NACRA 5.2 - early 70's