Hard to see in those pics but is there a landslide on that plow?
Yes, there's a landslide on the rear. It's a bar style landslide, not a wheel.
Doesn't look too deep to me. And I see no evidence of a hardpan preventing the plow from going deeper. And you are saying the tractor is doing nothing to hold it from going deeper??
If so, that makes no sense.
As to the pin position. Moving the furrow side pin rearward will make your problem of left drift worse.
Between all the passes I've made with the plow attempting to plow and attempting to set up, it's only ever try going too deep on me once and my tires spun so I pulled it up slightly and it kept going good again. Other than that, it hasnt attempted to go too deep on to cause an issue. And my left tire is in somewhat decent shape, but my right tire is practically bald, I need a new one bad. So that should really show how it hasn't gone deep enough to cause an issue. I didn't pay attention before, but maybe my r pt was bottoming out or possibly the chains were stopping it.
Tonight I attempted another pass again. For starters, I lowered the left lift arm to 7 inches below the left pin with the plow on flat ground, and set the position control lock nut to that location to eliminate the plowing too deep issue as being my problem. I gave it a go with 12 inches from the right pin to the mast. Within 3 feet, it immediately went all the way to the left again.
I then moved the right pin to the middle hole and gave it another pass ok new ground. Still went to the left.
I then left the pin in the same middle hole, and moved the draw bar as far to the left as it would go. I tried again. This time, the chains maxed out and the plow pretty much stayed with the top link straight. It was slightly angle to the left, but not much at all. I only got to try one pass with it cause it started downpouring, but it's definitely the best I've had it so far.
I wouldnt call my problem solved yet, as the chains and draw.bar being slammed all the way to the left is the only reason it's staying mostly straight now.if I were to guess, I'd say I've gone from missing 6 inches of ground down to missing maybe only an inch now.