Finally got a chance to put the cart together. However, the problem now is trying to get the jam nut to tighten on the caster bolt. The nut makes about 2-3 turns then locks up. Can't tighten it any further. When you try and tighten it further the whole caster rotates. Can't figure out how to hold the caster down to try and get nthe nuts to tighten. All the nuts/castors do this. About ready to send this all back to JCW.