New to the site, but I have owned a Viking since 2014. It has been a great machine, but as expected age takes its toll on everything. About a month ago, I noticed a popping sound coming from the rear end while doing work at the deer lease. Well work has been crazy and the 10 year old has been joy riding, and now its worse. It seemed at first it was primarily just reverse but after investigating it yesterday I can hear it going forward as well and it gets worse when we turn the wheels moving a low speeds. After I get up to speed going straight I do not hear it anymore. I did a search but have not came up with what it could be or the solution. Any ideas? CV?? Diff??