I think some of the workmanship is not so good. There should be longer screws on the swivel retaining rings. One of mine had to be re-set because it was almost pulled out. I used longer screws. Some of the miters for supports had lots of cuttings in them. Some of the cuttings were covered with glue and that means extra work for me with a fine chisel. I suppose some final sanding to fit will be required. There was a small packet of 6 stainless flat-head 1 1/4 " wood screws that do not show up anywhere on the plans or list of parts. I'm sure I'll figure it out.