I know how to find the high side of a spline on a 2 piece rod by rolling the butt ends on a hard surface and bending it as I roll it in my hand. Is it the same for a 4 piece rod? Is it harder to find the highside on a 4 piece as the lower two pieces are shorter and stiffer? I would appreciate any help. If it's the same as a 2 piece, no need to explain the technique.