The tail wheel that Van supplies doesn't have very much clearance between the ground and the bottom of the tail wheel fork. Many people report that if the tail wheel goes in a small hole that the tail wheel fork may hit the other side of the hole with quite a lurch. Doug Bell Sr, the father of RV-8 builder Doug Bell Jr, decided to do something about the problem. He designed a replacement tail wheel fork that is a slip in replace for Van's tail wheel fork, and he started selling them - comparison pictures here. Mine arrived on Monday, and it is a thing of beauty. I installed it on Saturday - it was a very quick job.