I was hearing a Grrrr sound ocassionaly. It seemed most frequent when I let off the gas but still was giving it a little bit. It seemed to be geeting worse lately. I read the driveshaft woes thread and took it off and the sound is gone. I think I hear a little ringing coming from the underside at the same time now, not sure could be my imagination. So I will clean the drive shaft, clean out the grease from the splines and grease the zircs on the end. Is there something else I should do before I put it back on? Is it worth it to take it somewhere and have them check it or replace the CV or U joint? Based on what I read, cleaning it out is the solution. Just thought I would check while its off. Se if I should take it to a drive shaft shop. Could the ringing I am hearing mean the Tcase output bearing on this replacement Tcase is going? Again, not sure about the sound. I also noticed more pep, but thats probably because its only driving two wheels. I'll go mark it for the alignment and clean it up.