Sawer Rob,  Off topic some, but, how do you keep your cutter from digging in during frontward pulls?  I have a Woods BB60 and unless I drive in reverse it will surely dig in on one side or the other and leave a gouge in my clay soil?
  I need to "constantly" watch the front edges and make adjustments if going forwards!  It's easiest to just drive backwards - although very hard on the neck!!
  Your ground does look flat and mine has nooks-n-crannies but I wonder if there is some trick that I haven't yet discovered.  Thanks Greg
  referring to your post#27