again.. with the N ground speed low.. that means you are idling... that means pto speed is slow.. that means your hyd output is low.. that means that hyd tiller is slow.
you've been told muktiple times now that N are not good tilelr machines. there are pretty much 2 trannies that make them a tiller machine. a howard and an everette.
a sherman DOES NOT make them a tiller machine. it slows down the trans AND the pto.
the howard and everette ONLY slow down the ground speed.. NOT the pto.
you seem intent of finding a 1200$ soloution to adding a tiller to an N when it's far cheaper to find a machine suited to use a tiller.. or simply get a plow and disc.