Kevin,
When you say engine covers, what do you mean? Do you have a picture you can send me? This may be something that needs to be rebuilt. Are these the openings on the floor under the bench? You may just need to make new ones. Crownline didn't start using the XL Plywood until '98. It may be that the wood got moisture in it and started to delaminate. Send me pics at fohbuddha@aol.com
We will try and get this figured out for you.
Kerry
"I would rather be lost on the lake than found at home"