RE: KATANA XL - new release
If you were able to get ahold of ultra rc they do sell just the carbon fiber, my most recent set are made out of piano wire covered with thin aluminum tubing which looks pretty good but it is starting to give me problems as well. I will probably install a more traditional type landing gear next and be done with it.
I am running the ys160 and love it, no deadsticks, awesome verticle, I only wish I could get my ys110's to run as good/