I've been having a rotational noise, which is most evident with the windows down and while starting out (forward or reverse). I hear a squeaking noise that sounds almost like a chirping, and it gets faster as I roll faster. I'm assuming it's coming from the rear driveshaft u-joint, and I plan on getting under there with a grease gun soon. I have heard horror stories about rear driveshafts on these things though - mainly I've heard that "if it's not vibrating, don't mess with it, because you're opening a can of worms". I don't want to take it off, replace the u-joint, and end up with vibration issues or other issues that are worse than this annoying squeak. Anyone else have this issue and deal with it successfully?