RE: Cheoy Lee
"Your buyer has a right to be cautious regarding cored 30 year old hulls."
Mostly it depends on the a core was made of.
In the 80's hull cores were becoming more common on sailboats to lower the weight and make a stiffer boat.
Balsa cored was becoming more common on decks , but it does equal HIGH RISK for a 30 year old boat.
CL makes quality boat-s so an E mail to the builders will give an answer ,