need a heavy duty rotary cutter for my tractor. I have a 2013 McCormick x10.50 h. the motor is 49 hp. roughly 37 at the pto. I was going to get bush hog bh26 bUT there spec chart says the Bush hog needs a min 45 pto. The bh25 will work with a min 35 n pto. some people say my tractor needs...