The Y does stand for yes Frank
Stephen , I always use metal for pins and replace plastic with metal . Even it it takes longer you are right that the end results are worth the effort .
That " hole " on the lower chin is now filled and sanded smooth . This was a two part affair by first filling the hole with scraps filling in more of the void and then putty was placed over top . The hinge slots on the fin are opened up . I didn't get to the primer stage yet . Still a bit of work to do on the struts and get the landing gear test fitted followed by assembly .