The adapter wheel steering normally causes a floppy steering wheel due to movement between it and the steering wheel, and the nut/bolt that holds everything tight keeps coming loose.. The bearing will cause some wobble, but is not a common part for failure unless it gets badly worn. You will see the egg shaped hole when it gets worn.
#3
StarTech
It all depends what play it is. There is several areas that cause problems from worn bushings and draglinks too. But it is the steering shaft just flopping around then the 532195228 Bushing Steering is probably the culprit. It is just a plastic bushing sitting in the upper operator tower.