AndreasL Dual z axis Smartrapcore ALU DjDemonD remix for 2020 with counterweight

This is my version of the AndreasL alternative dual z axis for smartrapcore (http://www.thingiverse.com/thing:896556) but remixed for the aluminium 2020 frame version.

I have reorientated the axis so that it sits front to back not left to right to prevent it interfering with the corexy gantry at the sides. So all parts labelled R are Front and parts labelled L are Back. Please ensure your software endstop settings and define_manual_x_home and define_manual_y_home settings do not allow the he