turn the truck to the right and then try to come back to the left and it sticks, you have to jerk through the sticking to come back to the left. When I looked under the truck there was no obvious problems.
steering sticks on 1998 Dodge Ram 1500
You need to have all your steering gear inspected, including your steering box. Put it up on lift and turn the wheel and have some one inspect the operation of all the steering gear. It WILL show itself under these circumstance to some one who is trained.