Thanks for the quick reply guys!

took one look at the RS prices and immediately went for the XL
I may go that route too, just to be sure. Is it the 15mm one? Will it ride ok on the 16mm pulley? I'm kinda worried it might derail during operation. Yes, I'm going to use some kind of tensioning there, and may rig up some belt reduction too.

For the Z I have used an old G cramp for the acme screw and a sprung 2nd nut to take the backlash up
NIce idea. I have some 12" G clamp lying around somewhere. Acme screws are non-existent here.


Thanks again.

Jordan