CoreXY Y Carriage Ver7 Exploded

Hi, this is a support model for http://www.thingiverse.com/thing:1283295 I am designing a slick CoreXY carriage for the Y axis, something that has its roots in Smartrapcore's design but quite departed from that by now. It features: - back-supported X rods (screws that rest into the X rods so that Y rods aren't flexed by belt tension in case the X rods aren't cut perfectly or flush with the Y carriage) - LM10UU linear bearings are clamped by the same bolt that is used as a back-rest for the lower X axis - the rest of the "clever" stuff can be seen from the model