Turn the flow control down on the hydraulic valve untill it is less sensative. If you get it too sluggish it will tend to slowly wander side to side. Start out with low flow setting and increase to best performance. If using AB only slower response will work better but if in contour some times have to have flow higher to make the curves. Every tractor is a little different and the implement makes a difference also. A heavy 3pt implement where the front end is light and ground is loose is tough to get to work right - front end slides begore correction then overcorrects.

In our area in Kansas putting the antenna on the front of the hood helps accuracy a lot but not all areas of the country can do that because of satellite locations. Also make sure the antenna is not on the rear of the cab. The farther forward (closer to steering axle), the quicker the signal to correct will come.

John