Yesterday I replaced the center support bearing and exhaust bolts (fun fun). Unfortunately, even after watching the video on youtube numerous times, I got in a rush and forgot to mark the two halves of the driveshaft. I marked the ends so I did the best I could from memory to get it back to where it was. The car seems to be running fine. What would be the symptoms of having the driveshaft "unbalanced"? I noticed on the front section one of the splines was missing and was thinking maybe this was a way to line it up but on the rear half they were all there. Topped off my trans fluid while I had it jacked up and before I put the exhaust back on, since even after putting a new radiator in and a new metal pipe for the trans cooler line on the passenger side, it is still leaking there. Guess I will be breaking down and buying a aftermarket trans cooler and bypassing the radiator altogether.