To red_eye5,
I read this story yesterday when I saw your post on BikeRadar, and I remember the initial complaint about the crushed seat mast. IIRC, in that thread it was never clearly stated that you were the original registered owner of the bike, in possession of the sales slip, and that it came from a registered Trek dealer. This may seem like nitpicking but unless you are, Trek is absolutely right in their denial. It's all right there in the warrantee document which came with the bike. *IF* you are the original owner as defined, then there is something amiss with your dealings with your LBS. I've had recent dealings, as a registered bike owner, thru my LBS, and Trek has been EXTREMELY responsive, so much so that I wasn't immediately prepared to take possession of my new frameset; it took them 4 days from the initial inquiry to get the new one to my dealer!
Since you took the "gamble" that you could get your seat mast issue repaired outside of Trek's system, you rolled the dice that nothing more would happen to the frameset. Unfortunately it did, but that does not change the fact that you altered the frameset and voided ANY warrantee that might have been in place.
From my vantage point there were questions that weren't clearly answered about the seat mast situation which caused the ensuing issues you have. I wondered why Trek would have offered you a reduced price on a new frameset when you complained about the seat mast, if you were the original owner. Their warrantees are pretty specific, and easy to follow. The fact that you had a damaged seat mast *SHOULD* have triggered an immediate replacement. Since it didn't, it's apparent, to me anyway, that there are facts missing from this scenario. Since I am in the US, and you are in the UK, your warrantee may be worded differently from mine, but I believe that the intent is the same.
Dumping on Trek for the problem you have is certainly easy, but is it correct?
I do not work for, or have any interest in the Trek corporation, BUT, I am a very, very happy customer.
YMMV
-dg