Still keeping up with your build, we lurkers are always here, still amazed. Sorry you have run into body problems. Was wondering what type of tailights you are going for? Seems like the tailight area stands a bit proud of the body. Are you going to fill in the back of the light area then round 'em off a bit to taper into the tailight? My body came set up for the rectangular lights but I have round ones so a bit of roundin' in order here.
Get out side once in a while and get some fresh air and sunshine...
ken