I am trying to find a short rack that is compatible with the CNC router parts rack. I need to extend my X axis for my ATC. I have their longest rack and need a few more inches of length. Grainger sells ~1 foot pieces but the size is in modulus and CNCRP has theirs in pitch and degrees.

does anyone know the modulus of the CNCRP rack, or where I can get a short piece that is compatible? with shipping it would be around $75 for a full length piece of rack from CNCRP, and I'd like to save some $$$$