When my husband put together these bar stools, two of the four had a wobble, as 1 leg was shorter than the other three.  I sent in a review stating this, and I received one replacement bar stool which we put together yesterday, and it is also fine.   I still have one that is not completely sturdy.   I am going to try putting a couple of pads on the bottom, to see if that works, but I feel that it would just be safer to have another replacement stool.  I have small children sometimes sitting on these stools.