87 4Runner steering limited

I had the front end parts (ball joints, tie rods, etc.) that have to do with steering replaced. When the truck came back, it had problems turning, especially to the right, but sometimes left as well. When this phenomenon occurs, I am at parking lot speeds. I attempt to turn right in a situation where I KNOW the truck should be able to navigate the turn, and the steering wheel rotates to about 1 1/4 turns (less than normal) then stops. The steering wheel will not physically move further, and this causes a huge turn radius. Sometimes it works normally; sometimes it does it turning left as well. Moving forward or in reverse doesn’t seem to make a difference. RPMs high or low; no difference as far as I can tell. I have jacked the front end up and checked the stops and for any linkage binding; no joy. Tires are inflated properly, power steering fluid is topped off and clean. It came from Toyota with auto locking hubs. They quit working automatically, so I replaced them with Warne manual hubs several years ago. The truck turned fine after the modification. It is NOT in 4wd. It does it on pavement and off. I believe this truck has progressive power steering, which somehow senses the vehicle’s speed and limits steering when moving faster (highway speeds). When I got the truck back from the front end work, the cruise control was not working, which leads me to believe that the two issues are related. I don’t think the truck knows how fast it’s going (speedometer works fine) and that it is limiting steering availability at in appropriate times. Any ideas on fixing this issue are very welcome. It’s very maddening.