If you don’t go with another suggestion one I would have as a possible option is to cut like a 1/4” strip and glue. After that has dried good, then take your trim bit to it. It would require extra work in getting it ready for finish, but it might just do the trick?? If any of the 1/4 crumbles as you do the trim bit, fix that with the bondo. You might want to do the 1/4" strip with another material also thinking about it??
On-going SW management class