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 South Western Ontario , Canada
 | yes i do have an a-b curve set up,  i am using this for when I mould board plow,    want an 56 width so i can drop the front plow furrow and scratch a mark to drop and lift  when going in and out on the headland.      then i want a 28 foot mark curve between the 56 mark to plow the headland both ways when finishing up  if this makes sence to u. 
 will look at the shift master switch,  i am sure it is on  for it works with a straight a-b.
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