Please tell me you jointed those pieces before gluing...
Yeah, I don't have a jointer, but I planed them as flat as possible.
I don't know.. you may want to consider cracking that in half and find a workaround to not having a jointer and create yourself a more stable gluing surface. That's just coming from having had a few woodworking projects that weren't a guitar split at a bad edge to edge glue joint.
By the way, the 6 looks exciting, hopefully we will see it finished soon.