Good catch on the wire and you are exactly correct about the unthreaded plastic. Sometimes when I am installing a plastic part and the screw just doesn't want to start, I run a tap into it for a few turn so it can get a start. don't go all the way or it may be too loose.
Nice work on wing bolts too.
Well, I got to go back to work for a bit. You'll have to lead someone else for a while. HEHE. Later dude..