I purchased a 2022 Bighorn by Heartland. I'm having exteme uneven tire wear on the rear drivers side tire. Heartland claims it's a Lippert component issue. Lippert claims it's a Heartland design issue. This finger pointing has been going on for 4 months. Has anyone else had a similar issue? We're concerned about the hig probability of having a blowout due to the extreme tire wear.