Sunfish top mast cap replacement installation question

I was checking the rigging and while lowering the sail the mast cap pulled right out of the mast! It was missing a pin, and had a very loose fit. I ordered the replacement but not sure about the correct way to attach it. The new cap does not have pre-drilled holes. The mast has two sets of drilled holes that are slightly larger than the pins, suggesting this has been repaired/replaced before. Do these pins just get friction fit into a hole drilled in the cap? What would prevent...

Sunfish top mast cap replacement installation question