Great design. I'm glad I ran across it for my BiQu H2 upgrade on my Artillery Genius Pro. For now, I'm sticking with the original wheel/V-notch rails (though I'll probably upgrade to linear rails "later"). Love the parts fan "chimney" being in the back.
For the Leo fan duct (using the original wheel/V-notch rails), I can confirm that reversing the lower nut/bolt on the x-axis will allow the Leo to fit (at least on the Genius Pro, but the Genius and X1/X2 are essentially the same). Originally, I tried cutting a notch in the duct as a workaround and it worked OK, but with reversing the bolt, no modifications were needed. That said, I ended up shaving off some of the bottom of the duct (~0.2mm) so it sits flat on the bed when printing and makes the overall height a little lower, without changing the interior (or performance) of the duct.
I also took some inspiration from a TriangleLab TBG-Air mount (that I'm using for my other Artillery Genius printer) and cut a channel in the top of the X-rail mount air chimney for the heat sink fan wires to route through, instead of going over the top or under the bottom of the mount (makes for a bit cleaner installation).










