I have been playing in SW for a few weeks and something is really bothering me and that is that I can't find a way to make the GT2 belt line up straight with any plate using 20mm x 20mm V-Rail. We have the pulley and we have the Nema 17 with a toothed gear and the nema plate and what I don't like is the idea of the belt (either under or over) going at an angle to the V-Slot 20mm Gantry plate. The closer the plate gets to the pulling side the more the plate will try and follow the belt so if the belt is at an angle to the plate the more the forces will try to pull that plate down, or up depending on the belt going over or under the pulley/gear to the V-Slot 20mm Gantry plate. Wheels preventing it or not the forces are still there and is a bad design to allow it to happen. Hard to explain but I want the belt to line up horizontally straight to the plate from the pulley and the gear but how? With the pre drilled set of holes it makes it nigh impossible and pulling a plate where the GT2 belt is not flat is just not a good thing. So, I am trying to figure out how others managed to make that belt completely parallel with the 20mm extrusion pulling the gantry plate along? One of the last two pieces I need to figure out before I start buying the stuff.