I decided to document the neck repair because I was not able to find any info online for newer Gretsch guitars that needed this work. Be advised that a neck removal and reset is not recommended for a first time try on a guitar like this. I will mention many of the steps that I went through for this job, but not all of them. This is not a how-to for a first timer. It is meant for other technicians as a helpful reference.
After cleaning up, I added some maple shims to the cheeks of the neck joint for an extra tight fit.
I needed to do a bit of touch-up at the neck heel and around the body. Given that this is a newer Gretsch that does not have a lacquer finish, I used cyanoacrylate glue for repairing small chips and then level sanded and buffed before gluing up the neck.
After getting the neck back on I popped the 15th fret back in and did a complete fret dress and set up with fresh strings.