Went on a rally this past weekend and experienced something never before happening. Sure i was loded with camping stuff, same as I always carry. As I hit some bumps, I heard this scrape several times on the highways. When i stopped for gas I looked around and noticed some scraping on the bottom engine pan. It was suggestede to tighten up preload, which I never ever had to do before. Tightened it up at least 10 turns but it still continued. No leaks around the spring or anywhere. Now my bottom engine pan is realy scraped up but no sense getting new one till I fix this problem. Anyone had that problem. Remember, It is a 2015 and I am the original owner and it never did it till this weekend and yes in 2015 I did lower it 1" and even then with the load it never scraped and only on the right side are the scrapes. Thanks to all who reply!