I have a 1982 Monark v16 boat that when I went to replace the plywood floor I noticed an inner liner of the hull. It's like it's delaminating I thought from the hull but realized in between was rotten end grain balsa wood. I cut most all the inner hull out and the wood is like wet mud. Question is, is there a fix by way of reinforcing the inner hull in a different fashion? The outer hull looks great. Thanks for any suggestions!