Quick question on my tranny tailshaft. I was trying to find a vibration I've been having and I took my driveshaft off to inspect it. When I did this I noticed that with the driveshaft off I am able to wiggle the tailshaft of the tranny around pretty easily with my fingers. Is this normal or a sign of wear? Should I be concerned or does it all tighten up after inserting the driveshaft back in? Thanks