Regarding that adjustment, there is a whole proceedure to it.
It must be done properly or the steering wheel will not recenter itself when one lets go of the wheel, which can be dangerous.
Follow the link to "pre-load adjustment"
Ford Bronco And F-150 Links - Gear Box
Also I think that the econolines had similar front ends to Full Size Broncos. Bronco's ball joints sometimes become TOO tight. When that happens the body starts to move before the tires start to turn left or right, when they finally turn, they go too far, and the driver continues to overcompensate down the highway.
My front end mechanic had me turn the wheel left and right and observed the body/frame movement before the tire movement. He jacked the truck up and moved the tires in and out (left and right) for me to feel how tight they were. Since I had no experience to compare it to, I couldn't tell it was too tight.
I did the ball joints myself. THat was a learning experience, but the truck drives straight with no wandering anymore.
__________________
BroncoJoe19
2006 Alt Fuel Jeep (electric)
'98 windstar 3.8L
'99 Crown Vic 4.6L
'90 Full Size Bronco 5.0L
I'm not a professional mechanic, take my suggestions with a grain of salt, or a cup of coffee
At the bottom of each post there is a little icon

Clicking it gives feedback to the moderators, and poster regarding which posts are most helpful.