I have  a autopilot on HP and The convergence on the insight is normally in the .2o to .30 range.  Offline error is 1 or less.  What all that means I not sure yet! lol 

I had Implement drift this way and that way and back and forth and Trying to match 6 row inline rippper and 12 row striptill and 12 row planter and took over a year but I hope this spring will be better as far as matching up goes.  Still 95% better than me trying to drive and watch everything else.  Last spring on a quarter I was running 2nd pass and when done from one end to the other I had to nudge 18 inches to be on line with the strips.  Not sure if its me, the satilites or global warming or what.  Still learning and it is still better than Markers!! lol  Well most of the time. he he!