I have a 208 t-case on my 87 Blazer. The rear output shaft has a bit of play. Is some play normal or is that a sign of worn bearings? I have a vibration problem and replaced/balanced near everything else that might be a problem. Before I dig into the output shaft, I thought I'd ask. I think I need to replace my tranny mount too, or at least the t-case mounting, just in case that could be a factor also.