I had a vault fail 5 hrs into a 6 hr drive, on my 2016 trailer, found some fishing line that had wrapped around the Axel and got into the rear hub seal, spindle was ruined, ended up having to replace the entire axle assembly, hub etc. So now when I stay at hotels I inspect for fishing line before making the long road trip. Some anglers just throw line in the parking lot when re-tying.