Ok I'm going to try to reply to everyone here in this one message.
The way I attached to the lift arms was I took a 2"x2" square tubing and cut it to the length I needed. Then I took 4 pieces of 3/16th inch and welded them in pairs to simply make them thicker. I did this just because I didnt have steel as thick as I would like it. These pieces went at the end of my square tubing. I welding the square tubing directly to Brinley? hookup that was already on the plow. So there is no movement in that at all. As you can see, I offset my pins when I welded them onto those pieces of steel. I did this by putting the tractor up on blocks that were about 6inches high, and took measurements on the lift arms using a level to get my height difference. I do think though that I did it too drastically because just looking at it looks wrong, and my right side of the tractor is never that low in the furrow. Since the square tubing is solid onto the plow, I am still having a hard time understanding why my plow is bending side to side. Or are you saying with the Brinley setup it made so that it's not solid, so the plow is allowed to bend?
I am planning on making the "A-Frame" system. I have seen them like that, and I wish I did that in the first place, but the way the plow was made it seemed like it would be a bit harder to do. Could be wrong though.
Oh and by the way, I just turned 19. Not too too bad for being kinda young right? I have also made a set of harrows, snow plow that hooks to the bucket, trailer hitch type thing on the TPH, a tray that goes on the TPH and I think thats it. If you would all like to see them I would be happy to put some pictures up.