The yoke/flange should not move in or out, you have another issue along with the leaking seal. Could be as simple as a loose pinion nut but probably has caused other damage.
Thanks ..thats what I was thinking
~ BD. "You won't find me in an old folks home" Pioneer Florida Cracker 1958 Apache Stepside 1958 Apache 1/2 ton Panel 1959 Apache 1/2 ton Panel
