Oct 8, 2019 8:44 AM - Ray Fox: R2: I think there is a problem with the y limit switch. When try to home, it grinds and makes an awful noise. Oct 8, 2019 8:46 AM - Ray Fox: Where can I get a limit switch for the R2. Partsbuilt does not not have them (that I can find.) Is it generic that I can get from Amazon. Would you recommend I also get the step motor?