The Pitman shaft and driven end of the Pitman Arm are splined - but they can be assembled in any position (i.e wrong) relative to each other.
You must be registered for see images attach
There is not an adjustable drag - as such - link on 2WD trucks.
If your steering is lopsided it is not a huge deal to pull the PA and reset it's position on the splines of the steering gear output shaft. You don't even need to tighten it up while finding the sweet spot - just lift both wheels off the ground and use the trial and error method. Start with the steering wheel straight, eyeball the PA and try to get it in the middle of the available stroke.