These were very easy to put together once all the screws and washers were laid out.  2 of the support screws (the ones that were 4 total in package) seemed to have stripped seams as I could not tighten.  So we just went with 1 on each side that did work.  Not worth repackaging to return.  These were for my dad’s house and he is very slim, so not too concerned with them holding.  The 2nd chair worked perfectly.