If none of the hitch parts get in the way of the shaft, the offset is not enought to bother the universal joints. They actually work a little better and last longer if they have a small offset rather than running straight. You will need an overrunning clutch for the pto. If you do not have that, the inertia of the heavy bush hog blade will push the 140, because is runs off the transmission directly connected to the wheels. The overrunning clutch allows the bush hog to free wheel when you stop the tractor. I still recall the time as a boy that my Dad had to go pull the suburban neighor with 5 acres out of his pond because he could not stop the little AC tractor that had the bush hog on it.