Has anyone come up with a working solution for X-axis flex on a 1000mm X-beam on their OX? The more I use the machine the more I notice. 2.5D carvings and V-carving are showing the weakness in 2X 20x60 slot configuration. The combination of plunging Z while moving though material allows the2 pieces to flex independently. (The Z-rail is actually rotating around the x axis!) I 3d printed spacers to join the 20x60 extrusions together, but I still have noticeable flex. As expected, it is worse in the center of the beam. Everything on the machine is tight and working. It seems fusing the two 20x60 rails would significantly stiffen the whole OX. I was considering TIG welding the two 20x60 extrusions together, but I am worried the heat would distort the slot the X-carriage wheels run in. Maybe epoxy would be a better solution. Another option I'm considering would be a fitch beam, with a .25" aluminum plate epoxied between the 2 rails. .25" spacers would have to be added to the X carriage wheels to compensate and new holes drilled in the gantry plates. Has anyone tried these options or other ideas?