Be interested to hear how you get on with your 6000 dome we drilled all but 40 acres last spring and back end on sf1 on a 3000 dome and it worked fine it just couldn't cope shoving the front press up and across a slope on the loose ploughing we tried sf2 for 40 acres and wouldn't say it was much if any better there's still a couple of wide bits on a sidling
That's a calibration issue nothing to do with signal.