When jacking up my 2018 23RL JayFeather to rotate the tires, I had something scary happen. The right side was up on a floor jack, I had loosened the lug nuts on the left side and was in the process of lifting it up enough to finish loosening the nuts and removing the tires when the rear axel clunked and dropped about one half inch. Jack was ok. Other side of the trailer was ok and U bolts and leaf springs looked fine on both sides. It did the same thing when lowering the left side down on the tires. Does anyone know what might have been going on? Was a leaf spring shifting? Something else?