They offered me a £100 credit note on top of the deal, my money back, or a swap for something of equal value.
So I'm now the owner of a Gibson LP Traditional, which what I went it to buy in the first place! I should trust my instincts. It's probably a worse deal but I'm happier so...
I must say that Colin and all the staff at PMT in Manchester have impressed the $% out of me since I made them aware of the problem. They've been professional, courteous and couldn't do enough to help come to a solution to my problem.