OK, stupid question #1000: Western Prodigy plow, 6 years old, appears to operate perfectly except: When I push hard with one side, such as trying to slice off a foot or so of a berm, with the blade straight, the pressure will angle the blade, impeding my slicing effort. Is this normal? I have only done this in the float mode, so I don't know if floating the blade also frees up the L-R movement.