Hmmm, I had this on my 2005 5 Spot, called Turner direct (it was a reduced price trade in job for my 97 XCE), DT himself answered the phone, he was very apologetic, asked if I was happy for my LBS to do it and to send him the bill for a refund. Got an engineer mate to do it in the end.
Got a 2011 DW spot from Merlin a couple of months ago. Seatpost went in ok but when I went to remove it a few weeks later it was snagged and the Thomson post got badly scored in a zigzag stylee on the way out. This time I wrapped a broom handle with some wet and dry and sorted it out myself (I like to get ghetto with my bling, ok?).
My mate has just bought a 2012 spot and his came with a QA checklist with initials against each task, these included seat post reaming and check of BB threads (another common problem with beads from the blasting stuck in there apparently). I love Turners and I love the customer support but bit of a shame it’s taken them the best part of 20 years to sort out basics like this…..