438 miles and 25hrs, I decided to go ahead and service my machine. Atv 10w-40 in the engine, 5w-20 in the trans, and ATF-4 in the front diff (thanks Ronnie). Anyway when I finished I rode around abwan hour, and no ‘clunking’ at all! Don’t know how long it will last, but it sure felt good not to hear it!