Nice work so far. I noticed the same issue with the wheel not fitting properly until i gave it enough force. i do recommend when you get to the taillight, cover the inside with chrome foil to reflect more light back through. If you're really 'into' Knight Rider, you can install a led scanner into it.
Just for you Mm, the KR kit makes a good S&B3. one needs to fill in the front scanner. The real trick it to find the stock emblems.