So I am considering trying to build a dolly for the 260b. I would like to make it similar to the Bxpanded version. I didn’t know if anyone on here has dimensions of the one they make. The length of tube and width at front width at back. I think I could figure the rest out. I have some material and a welder plus some really nice casters. I don’t really want to spend the $200 for the dolly if I can make it or my own version of it. Any help on those dimensions or any others above and beyond that would be cool. Thanks in advance.