VANCOUVER ISLAND WINDTALK

I have two booms and the rubber liner has decayed , want to replace it on the gate and boom head. Any parts out there? Where to get em?
One gate needed as well, cracked boss shown.
I tried the sdm to rdm mast shim but it’s too thick as these are rdm boom heads.

I sent a bunch to recycle but we can check if I have the part in front of me….pictures won’t do it.

I’m at CB

As to the rubber, try tile board silicone, the blue stuff, other options are using chunks of old bike tubes to slip over or a 6” long large heater hose 2” dia chunk sliced longitudinally