Hi Neil,
believe me I am no guru on ploughs and have never operated or set one up.
The only involvement I have ever had with side draft issues was with a Challenger 65 that was wearing one track due to the disc plough not being set up for neutral draft by I think changing the angle of attack of the main plough frame and hence discs--I stand to be corrected.
When the Rep I dealt thru first saw the machine the draw bar was pinned, I recommended unpinning it and the draw bar swung fully to one side thus I believe showing the side draft issue fully--hence the next recommendation was to adjust the angle of attack as I call it--maybe there is a correct term that I am not familiar with due to my ignorance of ploughs.

The client disputed our recommendations because his plough worked OK on his 4 wheel drive tractor--after much mumbling he adjusted things and the issue went away is all I can say as to who was likely correct.

Your experience may vary.
Cheers,
Eddie B.

Hi Neil Have ploughed a few thousand acres with aD2 on flat and hill country always ploughed out of the furrow with a half sliding draw set to lea and if a trailing plougg is setup properly all you do is pull it as a gentleman with many years of ploughing horses don't steer ploughs just pull them I can move the D2 Welliver a foot to land when ploughing if using offset discs in my years you always have to steer the tractor mind you pretty big for a D2 made by Hooper in NZ we call them 20 X 10 20inch scallops back and front 10 wide about 8ft 6in wlde

4 bottoms??? My own thought is, smaller plow, easier on the D2. I used the CASE plow behind a light tractor and I could feel it fighting it. As others said, adjust accordingly, allow the swinging drawbar to hinge freely, and let the wheels stay in the cut, and it should follow okay with minimal steering. The offset type disc is the one to be of more concern going straight. Tandem discs and field cultivators usually draft in the center.
Have fun! JM