Follow up: So, I dropped the trailer off about eight weeks ago for final warranty items including the axle issue. Lots of delay with diagnosis, and then with Lippert, who said the axle was within specs and needs to be aligned. CW sent the trailer to another shop who corrected the rear axle by adjusting the hanger on the right side and "straightened" both axles. The front was toed in prior to being repaired. Two new tires were requested from Crossroads for the pair worn from the bad axles.
I'm glad I noticed all this prior to warranty expiring. I'll be taking it back later for other minor repairs when parts come in. We have a trip starting tomorrow.
Steve & Sue
2017 Grand Design 297RSTS Travel Trailer
2017 Ford F-350 Lariat Crew Cab diesel 6.7 SW LB 11,500 lb GVWR package
Former: Crossroads ST26RB