Found a way to increase Gunslingers damage midscreen, he can get 40% midscreen now for 1 bar (this may or may not also work off B32u1, I haven't tried)
F13xxEx Sand Grenade, run F2xxSand Gust, NJP, 2112xxSand Trap = 34% overhead 1 bar
B33xxEx Sand Grenade, run F2xxSand Gust, NJP, 2112xxSand trap = 39% low 1 bar
F13xxEx Sand Grenade, run F2xxSand Gust, NJP, 21122xxSlide = 38% overhead 1 bar
B33xxEx Sand Grenade, run F2xxSand Gust, NJP, 21122xxSlide = 40% low 1 bar
F13xxEx Sand Grenade, run F2xxSand Gust, NJP, F24xxCaltrops = 32% overhead into caltrops 1 bar
B33xxEx Sand Grenade, run F2xxSand Gust, NJP, F24xxCaltrops = 34% low into caltrops 1 bar