RE: Carbon Fiber Landing Gear concern
You may want to consider a different axle that doesn't require such a big hole. Tower Hobbies sells axles made by "Harry Higley" which only require a hole the size of the axle it self. I use these on my 2 meter pattern planes with the graph tech gear. The have them in 5/32, 3/16, and 1/4. They only run about $3 a pair.