| For starters a pitman arm creates an arch in travel ,,,,,,,,, the pro drive is a strait line push and pull ! less shatter at the cutter bar There is going to be a lot less wear and tear in the cutter bar all the way down to the wear plates ! I was going to up date to a 900 wobble box and counter weight pit man ,,, glad I just move on ! And the bottom part of the drive is the same thing as on a 600 head so parts can be had at the locals ! |