Bit worrying on a £600+ product...
That affects 350 and 350SE?
Damn i hope you contact CS see if they can replace the chair for you because that's awful for it to arrive in that condition, especially after spending £800 on the item.
With the best will in the world, these things happen. Feedback on the chair so far has been overwhelming positive, but there will also be teething problems. Rest assured should anyone have similar issues, between OcUK and Vertagear they will get sorted out.