Another consideration related to ground handling on tail draggers is the location of the axles relative to the CG. On the typical constant chord wing, axles set right at the leading edge works best. In many cases, gear that was set too far ahead of the wing was the problem. Groundlooping went away with the gear relocated to the leading edge and no toe in OR camber was required. But, this sometimes isn't enough and some camber and toe in is required.