I suspect that O'day used a polysulfide sealant, similar to 4200 throughout the boat. There are signs of this sealant around where the traveler track is attached to the cabintop. When I pulled up the old cabin soule on Far Niente, that is what was holding it down. When I replaced the soule, I used 4200.
I recently pulled off one of the triangles that close the ends of the genoa track. I know that I will be doing the drill, fill, and drill exercise to seal these holes properly, I simply dread removing the genoa tracks (24 machine screws and nyloc nuts EACH) and doing the same. I always have to work alone, and can see that this is a job that will require two people.