I have a 2007 jk 2 door and need info on how to remove the rear pinion yoke to relace my oem style shaft to a 1310 style. I have another shaft that is splined like all others ive seen. But once I remove the original shaft all I see is a flange with no nut in the middle. How do I get this thing off? Is it threaded on like a nut? Or just pressed on? PLEASE HELP!