…ok carriage flex parametric are ready for some test. 
accepts m3 to m6 screw
accepts rod or square profile granty.
Hahn is master i’m only a padawan.
i just update link with github.
better for update it fast without re-share the link
add demo 3d file for see it in real time too…
sorry i search alteranitve to makerbot customizer (with it more simple and no need install anythink on pc but is makerbot and i don’t like it! )
sure but in future 
i think… right Mark?
Sure…for this no push a direct request to Mark 
and add it at my github