Mast whatzinfidel?

Mar 19, 2018
3
Hake Seaward 23 Brookville Lake
Hey folks, thanks for reading-
I just purchased a 1994 Seaward 23 and one of things that is going to keep me up at night is replacing the little plastic fittings on the mast where internally run halyards come out as well as the mainsail track entry fitting. All three of these pieces are broken to some degree and will make raising sails annoying if not damaging to equipment.
So my question: what are these called? And two, where to purchase replacements?