Unfortunately, Lippert does not have the best of reputations for stepping up to the plate and fixing things. Check out Google. They tend to blame the owner for overloading, driving through potholes and the like. We have a brand spanking new TT with a Lippert frame. The day after we bought it, we discovered that 5 out of 6 spring hangers are bent. One is bent 1/2" out of vertical. Lippert can't say we abused it somehow, that's for sure. Still waiting to hear from our dealer how Lippert is going to deal with this. Funny thing is, the tech. at the dealer looked at several other trailers on their lot and they all have the same problem!! What the heck?
Perhaps axles could be bent from day one?? I've heard one explanation is that the drivers who deliver these from the plants don't always drive them carefully.
OP, if you are still within warranty, you should start a paper trail to be able to prove when you found your problem. Otherwise, unfortunately, it might just be easier to fix it yourself. Be glad you don't have a cracked frame like some have had.
From Lippert's website "Our quality program flows through ever facet of our product develeopment lifecycle. We are dedicated to supplying the highest quality products to our customers because if they aren't happy we're not happy!" Right. Two out of two TTs for us have had Lippert problems. I know we aren't alone.
Oh, the joys of owning an RV. Almost seems like if you don't have at least one problem of some kind, you got lucky. Last (and first) TT had problems with the brakes and Lippert that took over a year to fix. Turned out the brakes were faulty from the factory.
Gil & Deb & Dougal the Springer Spaniel