I have a '89 XJ, 4.0 mpi, AW4, NP 231, 4 door that I just replaced the Dana 35 rear axle, and it appears that the yoke on the transmission end of the drive-shaft is now just barely long enough to keep a seal (no fluid leak has been detected). Q, are there different lengths for the 27 spline AW4 transmission yoke? If so, who sells them? I'm already grateful for any help I receive here.