The one thing you have to know about warranties on certain things like bikes is that they will screw you if they can. How long can you ride a bike and have it be found with defects in material and workmanship 30 years later? No company will warranty that and that's why they have clause in the warranty that doesn't cover normal wear and tear, and after 30 years that's what they'll say it is. I had a Orbea Scandium bike that the frame cracked from the top of the headtube about 1/2 an inch downward, Orbea would not warranty it after just 9 months of use because they first deemed to be from the result of an accident, but the LBS said no way and to warranty the bike, so Orbea changed their original diagnoses to it not being covered due to normal wear and tear...9 months and about 10,000 miles is just too many miles for their warranty!
Let's look at this from another way, I have a 1984 Trek 660 with over 160,000 miles on it, example only, lets say one of the lugs came loose and it was because of lack of proper brazing, so they decide to warranty it...how are they going to do that? They haven't made any steel lugged bikes for over 25 years, it was the second from the top of the line bike Trek sold back then, do you think they'll replace it with a second to the top of the line Trek? they would probably give me the bottom of the line aluminum piece of crap and call it good.
So really lifetime warranties are meaningless.
What size seatpost is it? I have a spare ti seatpost in my spares box, like you do 
