Very Nice, I believe I will put that into my build. I am just starting the leading edge so would be the perfect time to incorporate that design. Will draw it out in Fusion 360 I believe and validate the fit on the XL and the fold clearances.
Took me a minute (well more than one) understand the design plans as provided in the link - from my understanding the forward mounts "slide" along the tube into the wing. I would think you would want to be very careful of that operation as the design does not seem to ensure the tube sliding into wing is "held" perpendicular to the wing length. I could see lowering the wing while in the inward position and rode pushing thru internal structure. Wonder if a fiberglass tube could be mount internally to prevent that. Hum, that would not work with the stop bolt at the end!