I received one of these a while back. The service from CNC Router Parts was fantastic. It allowed me to get up and running quickly. A word of caution however. Yesterday I noticed my "Y" axis moving erratically. I discovered the large nut that holds the plastic anti-backlash assembly into the mount had loosened. It required a lot of disassembly and assembly to get at it. All is well again now . Make sure the nut is tight prior to installing the mount!