I have a 2011 Catalina 375 with warped bulkheads in the door to the v-berth and the doors to the head. The v-berth door doesn’t close and the head doors don’t close properly. What’s the best way to fix this? I‘m thinking that I need to remove the steel rim that the door is mounted on and re-shape so the doors close properly. Then fit the steel rim back in the bulkhead by trimming and shimming if necessary for a proper fit.