https://talk.newagtalk.com/forums/thread-view.asp?tid=295394&DisplayType=flat&setCookie=1 Looks like you just need to bring everything back into the factory original specs.https://www.google.com/search?q=how+to+align+the+tracks+on+a+9400+T+John+Deere+%3F&ie=UTF-8&oe=UTF-8&hl=en-us&client=safari