Guys I have been working on this 1963 model 65 for almost a year.... fixing leaks new hydraulics,rebuilding almost every part of it. SO I take her out of the barn yesterday ( by the way she runs like a top) and I get this clanking sound from the right rear axle. The noise is coming from the outer part near the rim. If your running on smooth ground, it's quiet but, if you hit a bump or rough ground it makes this clank. I have confirmed it's nothing hitting the fender or anything.... I scared to death it's the planetary s. That side does have a lot of end play. When you shake the tire it moves in and out too much..... HELP what else could it be?