A few problems with the ballscrew: 1) It should be 1250mm not 1200 as you lose 500 revs on your guides because if that's a big deal to me! 2) I couldn't get the BF12 to move at the end where it should - the 10mm tolerance is a little different, but since it has to be tight the bearing can't slide. The BK12 ran fine, so it's a lead screw issue. I can and must send it back!
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