New 29' travel trailer dog walking

That sounds extreme. A little more information would be helpful. Make, model of trailer, is it new, what is the tow vehicle, what type hitch?

Take trailer to a big truck (semi) shop and have axles properly aligned.
They can also check frame for straightness

Dealer can't do it and most rv repair shops don't have proper set up

If it is brand new I would take it back to the Dealer and ask them to hook the TT up to their TV and see for themselves. I would strongly tell them you would not
take it back until fixed. If that did not work hire a Lawyer

Two possible causes:
Axles out of alignment.
Frame Bent.

samsontdog wrote:
If it is brand new I would take it back to the Dealer and ask them to hook the TT up to their TV and see for themselves. I would strongly tell them you would not
take it back until fixed. If that did not work hire a Lawyer

I wouldn't take it back.
I'd tell them to come get the dang thing !!

You might do a little measuring to determine if the "house" isn't square on the frame or if the axles aren't mounted right.
A friend bought a brand new Arctic Fox TT last year and the house is about 2.5" off center. Weird but doesn't seem to hurt anything.

Did you hit any curbs real hard with it before you figured out how big it is? If not you, there is a good possibility that someone got the undercarriage hung up on something and brute forced it out. If it has leaf springs, it is possible to shear the locating pin or bolt off and shift the axle down the spring pack a little, bend the shackle mounts, or even bend an axle enough to make it track funny. A trailer tracking this much out of align is probably not safe to tow, at a minimum from taking up at least nine feet of lane or having an axle or two randomly fall off. I would call the dealer that you bought it and explain what is going on and get them to send out someone who has at least a little sense to do an inspection before anyone moves it (hopefully an insured hauler and not you). It should go back to the shop and be fixed (and documented as to what they did) right on their dime. Don't let them blow smoke up your tail by saying that they all do that, a RV hauler would not have accepted it from the factory that way and it will not pass a safety inspection that way (they did put a sticker on it that way?). If they just slapped an inspectin sticker on a dangerous vehicle without actually inspecting it they could be in trouble with the Tx DMV.

The spring hangers might have been welded in the wrong locations. Happens once in a while. Easy to measure with a tape measure. Use front or rear of each I-beam as a reference point and measure to the spring hangers on each side. Should be the same. If you do a google search, there is more info. on doing this like measuring corner-corner to check for squareness.

If you take it to the dealer, they will contact Lippert and send pics and info. They could easily come back and say "it's within spec." and you will be SOL. Better to go a good frame and axle shop who knows TTs or FWs and pay the $100 or so for an inspection. If something doesn't look very good, then take the report to the dealer and send a copy to the factory as well.

For it to track that bad, something would have to be majorly wrong...

Thank you all for your input. It is a brand new 29 foot Gulf Stream Innsbruck, bumper pull. I have not hit any curbs and I noticed it immediately after picking it up, on the way home with it. I called them immediately and they said they would contact Gulf Stream for instructions. No response for a couple weeks until I called and lit a fire under them. Now it's over two months of dealing with this issue. I pull it with an 07 Yukon and I pulled a 29 foot Jayco Jayfeather for 7 years without this condition. Pulled straight as an arrow. Same towing equipment and same mirrors. The dealer eventually (FINALLY) got measuring instructions from Gulf Stream, and the measurements came back with several measurements up to 1/2 inch off. I asked for Gulf Stream's instructions on what to have done, and they had the dealer re-measure, and guess what. Everything is perfect this time, no problem. I took two videos (taken while driving, through the rear view mirror) and sent them today to the manufacturer of the frame and axles, and should hopefully hear back tomorrow. We've gone camping only twice, and only 60 miles from home, and it seems to pull OK, but I'm worried about the tires wearing, or even overheating, and blowing prematurely. And taking out the wheel well and trim in the process. I welcome any ideas. Do you think I am overreacting on this?

Based on your description you're not over reacting. But here's another suggestion. Can you have a friend follow you and record the trailer pulling off center as you drive down the road?