I wish to replace the fixed trim with select trim for my 3.0L omc 400. It is in a 1985 bayliner capri. The problem is that there is a glassed in cross piece between the stringers that the fixed trim engine mount was bolted to and needs to be removed to make room for the select trim motor. It is not needed for the select trim. Can this cross piece be removed or is it also there for structural support?