SketchUp file for Tarantula++

Since there were no assembly instructions, I did the best I could placing all the pieces using Google Sketchup. I'm still confused about how\where a few pieces are used and I hope that someone else can take this file and help me complete it.
Added some components using SkethUp's 3D Warehouse (like an endstop switch and sliders and rails and sometimes screw holes don't line up.
I'll either make sure I have the right components OR alter the STLs a bit so that all screw holes match.
I very much