Between DD and myself, we have a collection of Haas and Leistner brushes. We also live in a very humid environment, so static is not generally a problem. The Red Gelding is still unhappy. I think he’s just sensitive and a bit grumpy. He’s a lovely horse in other ways, but he has always been touch sensitive - brushes, hands, etc… He may very well have a vitamin deficiency of some sort, because he lives out 24/7 (with a run-in shed), is not clipped or blanketed. He is not on grain of any type, as he is an air fern. Hay during the winter and grass during the warmer months is all he’s allowed. I really think it has something to do with his skin/muscle/tissue fibers, as he has also been the hardest to saddle fit. Again, just very sensitive to touch/pressure of any kind.