One of our Kitfox SS7 group of 3 had a tailwheel spring clamp bolt failure (maybe Airfox will post details) where the #10 bolt holding the clamp plate sheared off. Apparently from side load. Lots of use on grass and unimproved runways. I am wondering how common this problem is, and if so, what have others done to beef up this area. The Grove main gear is so strong and the AK Bushwheel tailwheel we are using is also very strong, but this spring clamp area appears to be a weak link in an otherwise very sturdy landing gear system.