At a guess, something in your garage is infested with woodworm.
I did think that Morgan were pre-treating the entire wood frame with Cuprinol 5 star, so perhaps, they missed a bit. Cuprinol 5 star is good stuff, I've used it for years and the entire three wheeler frame got two generous coats before I painted it.
Find out where they saw the holes and go a bit bonkers with the stuff. Then have a good look around the garage.
