I have a 1954 Super 77 Oliver. We use it explicitly for antique pulling. It is completely regular stock with zero modifications. Stock tires as well...never been replaced...still in good condition I'd say. For pulling we removed the Hydraulics and added brackets to the middle and rear and front. Brackets have been there since 1991. The problem with pulling to the right has just started in the last 7 or 8 years. It is a great pulling tractor no doubt but when you get about 3/4 down the track, the front end comes up obviously but it immediately pulls to the right every time. Like clockwork and I of course have to tap the left brake to keep it straight. What could be causing this? The axles on the right side is out further than the left side by a 3rd of an inch. The tire pressure is at 10 PSI in both. Also, to counter the pulling to the right we actually took an 1850 Oliver wheel weight and bolted it onto the left wheel in an attempt to give it more weight to keep it from pulling. But to no avail. Has anyone ever heard of this? What could be off? Could a brake be sticking? Neither tire spins either when pulling to the right like tread were a problem or something. It either loses power all the way or the front end goes high enough that I am no longer comfortable. Please any ideas thoughts I'd appreciate everything.