geardaddy, I don't know about the firewall, but on my mini ultra stick I reinforced the landing gear with a piece of light ply inside the fuselage. I also run nylon bolts in the mini, and have changed them from the factory 8's to 6's for extra strength. I fly at some rough places. What happens is instead of the bolts breaking, sometimes a hard landing will cause the block the blind nuts are mounted in to rip out of the fuselage. I haven't heard people talking about this on the us60 so I didn't look at that yet, but I will. And It's cool to ask in here, as most of the existing ultra stick threads are kinda old now.