I had my tractor at my fathers this weekend to help with some chores and the four wheel drive started making alot of noise. I have heard the noise before when going into or out of 4wd, but It became a big issue yesterday. Now, every time I go in or out of 4wd I have to play with the 4wd lever a little bit to find a spot where it doesn't squeal. This is a loud, fairly high pitched squeal like a friction disc slipping or something. Just to top the weekend off, I had the grounding issues that others had warned about. All 4110 owners ought to take the 2 minutes to remove the ground wire and scrape the paint off the frame under before it happens. It's kind of embarrasing when your tractor won't start and the green ones twice it's age start right up next to it.