Split Chassis (for smaller build plates)

I further split up the chassis plates on Daniel Noree's OpenRC F1 car in order to fit them on my Printrbot Simple Metal 150mm build plate. I later realized that sections 2 and 3 could be combined and still fit. I have included the file, but I have not printed and assembled that combination yet.

For 4 piece split you would need:
sections 1,2,3 and 4

For 3 piece split you would need:
Section 1, "3 piece center section" and section 4

The screw holes lined up well for me, but the slide j