It's very important that the steering gear is on its "center point" when the wheels are steering straight ahead. Simply getting the steering wheel spokes level doesn't guarantee you won't have some steering wander, as the only place there's zero slack in the steering box is when it's within a very few degrees of steering wheel movement of the center point. Find center by counting turns lock to lock, level the spokes with the splines, adjust the sector preload according to the service manual instructions, lock the steering wheel at dead center, and then go about making the wheels track straight ahead. If they don't do that, something is worn, bent, or assembled incorrectly. Fabricating an adjustable drag link to accomplish that is like giving a brain tumor patient a pain pill to hide his headache- - - - -you're treating the symptom, not the root cause of the problem.
Jerry
