That’s no fun. Glad you were able to get a quick fix for that! Can’t say I’ve had the same problem with the linkage system I have, but it’s not a hard fix for the ring.
I’m still working on my next round of revisions that will include those holes in the nc files. I have a few more things I need to fix before I start creating new nc files. Among those changes are the mating holes for the rails and lead screw pillow blocks in the spine.
In the meantime, I have both a PDF template and a DXF file I can share with you so you can lay out the holes for the carriage plate. The template is drawn on a A sized sheet, so you should be able to print it at 100% on a normal printer. I have included dimensions to make it easier to check that it printed to scale.
CarriageTemplate.pdf (13.3 KB)
CarriagePlate.dxf (86.1 KB)