What does this cover? I have had a set of agx now for probably 4 years. They are toast. Every bump slams me against the bumpstops. I am looking at ebay right now to order another set, but I see they come with a "limited lifetime warranty" I am guessing it is very limited. And considering they have had FM springs the entire time that limits it more. Is it worth my time to find a dealer and replace them, or just buy a new set off of ebay?