Received two "T" extra; "Q" was missing two; one "N" was stripped would not screw in properly.  Off to Ace Hardware for two "Q" locking nuts and an "N" screw.  Finally, after 3 hours of construction it was finished, except for getting black spray paint (next weekends project) to spray the silver screw/nut replacements.  I have to say that chair is what was offered and what we wanted and I love the sling glider - it moves great.  We give it 4 stars only because of having to go get replacements (which then cost us a lunch out....LOL) .