that’s cool, thanks for letting me know. on a side note, has anyone seen one of these and determined whether or not its the same center to center spacing? http://www.ebay.com/itm/Single-Dual-J-head-Nozzle-Extruder-0-4mm-1-75mm-HotEnd-Mixed-Color-3D-Printer/311577432878
if so, it may be a quick and super easy way to upgrade the hot end without machining or doing anything apart from coming up with a blower and block cooler that fits.