Joe,
Check your front leaf springs. If they are flat, it changes the steering geometry, the wheel won't be on center, and your steering will be very funky.
I fought bad steering for years until I put new springs on. It raised the truck about 3 inches, and changed the position of the wheel about 90 degrees. It was a magical transformation as far as handling.
I think you could effectively do the same thing with the adjustable drag link, but if all else is right, you should not need an adjustable drag link.
I also agree 100% with what wrenchbender said.
Kurt
