pbc linear bearings modified X carriage

I thought the PBC linear bearings would be the same size as LMU88. PBC's are slightly larger. Tried to carve and sand it out and got binding issues. Decided to redesign X carriage for the Einstein I3 rework, but the larger bearings were in the way of screw heads. I added raised posts and used longer screws.

Works like a dream after working the kinks out. I love the bearings. I hope they come down in price some day.

Thanks PBC, you guys are a class act.