This is a redesign of spauda01's D-Bot print carriage. I could never get the lower two wheels to sit flush against the bottom of the x-gantry which introduced a slight shake when ever the print head moved in the x-axis.
This part removes one of the top wheels and moves the other to the middle. For easier adjustments I've added a spot to put a M3 nut and bolt through the front carrriage plate which pushes the wheel bolt into the v-slot. This is in my opinion an easier way to find the sweet spot without having to over tighten the wheels.