Hi Mark: I'm with Vinnie. Your excess superglue will really take away from your final product -- it's the equivalent of seeing someones tube glue slopped over their model. I noted excess glue where the braces for the forward section of the cab, where the headlight grate attaches to its frame. You also have a serious alignment problem with your radiator -- it's throwing off the vac formed engine hood off -- I see a gap on the bottom of the left side hood panel.
I have the same kit and although I've put a lot of time into it, I've been stuck. So I can sympathize with you.
I almost exclusively use medium viscosity super glue(CA) I put a dab onto a slip of aluminum foil (for some reason it remains liquid longer there) and I apply the CA with a bit of wire or stretched sprue. In this way I control how much glue I apply.
As for repairing your tailgate handles, I would cut everything off and sand it smooth. Then, use some thin strips to replicate the handles. The real thing was not a tubular handle but about a scale inch wide.
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For more photos go here:
http://www.tanxheaven.com/mackNO/mackNO.htmFor images from the Tech Manual, go here:
Ken Fortier's pictures I live in Michigan too. Feel free to contact me offsite.
HTH, Roy