I'm creating an E3D style toolchanging printer right now, but with some key differences. I know it was stated that they wanted a really wide rail and I believe it's either 24 or 28mm on the current toolchanger. Is there any reason not to go with a wider one than that, because there's wider ones out there, including a 42mm. The only difference I can see is that you have to mount it differently since it has 2 screw holes wide instead of one. I'm considering going with Misumi rails due to the cost/quality ratio.