Frame is really solid and seems pretty durable. I do not understand the carbon piece meant for the FPV camera. Maybe it is because I have a micro camera instead of a mini camera, but I could not use it for my camera. But luckily there is nothing a 3D-printer can not fix :) I only wish there was a better way to get the LiPo battery strapped with two Velcro straps. The delivered batterystrap just barely fits fully around the quad just before the two front arms. It almost gets hit by the props. The second batterystrap can only go in the back where it only straps around the top plate and not the complete frame (because the arms are in the way).
everything is fine, but the package says it is Martian II 225mm and not 250mm. but i am measuring the arms, and it looks like they are the 250mm arms. I send you a photo of the package, and I hope during assembly that it is indeed a 250mm. I would confirm that here after. (but i think is ok!) thank you, cordially, AureL