Thanks Quaralane & Jurasikfrank,.....but I had to fix it

The mandible wouldn't close right to fit the sidewall because of the details i had scratched for the inside of the circular openings.

The mess was me trying to fill the gap with filler.....around the greebles....not good:

Original pic:

I gave in and cracked open the mandible, removed the wall and chipped away any parts inside that was fattening the mandible. I cleaned off all the messy filler and re-assembled the mandible, which now fits a lot better.

I'm gonna make the McLaren boxes tonight, then move on to the docking rings

J