Has anyone carried out this mod?
... not hard to do, with a North 5th line bar, simply put the center line (5th line) onto one of the front connection of the kite instead of the usual center 5th line and make sure you remove the red ball that is above the Y point.
Not really recommended way and reckon its trying to re-invent the wheel but it does work (I tried it as an experiment). Mind you it makes it hard to re set up after a punch out as it easier to get tangles in the lines. Since all 3 front lines are same length, kite will fly normally but will behave differently when punching out.
If your going to mod a bar, make sure you test in light winds incase things go wrong!