I?m beginning a rebuild of a 1961 Glasspar Avalon. My first question is, will the curved transom be suitable for twin engines? I?ve always heard people say that curved transoms needed to be ?shimmed? before twin engines could be installed. So, what would the recommendation be on redoing the transom? Leave it curved? Rebuild with the curve then shim it flat? Or, make it flat during the rebuild? It seems like you could cut the outer skin about 2/3rds to ? ths of the way down to the bottom of the hull and have the plywood rebuild create a flat transom for your motor mount. Any ideas or suggestions will greatly be appreciated. Thanks.