Bought one the other day unassembled. There is a cross brace that goes between the 2 legs that isn't shaped correctly - and the wheel wobbles cause the axle is too small in diameter. I checked the Home Depot assembled ones and they are all the same.
I got an argument from customer service so I used the cross brace as is but the wheel wobble would drive me nuts. I happened to have a small piece of roof flashing that I had saved - .017 (seventeen thousands) thick. I cut a small piece to wrap around the axle - and wallah - the wobble is gone. I called customer service to tell them of the fix but I could tell by the questions the rep asked that he had very little idea what I was talking about. I would assume they get calls regularly about the wobble problem - you would think they would correct it.