Greetings Geetech i3 users. I'm building my acrylic i3 printer and hit a snag and need guidance. On the top boards for mounting the vertical threaded and smooth rods (Y axis?), the holes for the threaded rods are not large enough for the threaded rods to go through without actually threading them through. As I'm looking at it, it seems that the threaded rods should rotate freely in those holes, i.e., no friction with the sides of the holes in the acrylic boards. So, do I drill these holes to a larger diameter so as not to have tight contact with the threaded rods? Are they supposed to spin freely in the top holes as I assume?

Many thanks! Looking forward to printing!

Max