I'm mildly surprised that no one has mentioned or heard that Grand Design started using Curt axles this month.

As of May, Solitude is built with 7,000 lb Curt axles and standard ABS braking.

Disc brakes are still available on 7k and 8k axles, but no ABS.

I haven't gotten my hands on any yet to see how they work or what they take to operate, but I will soon.