not a guru,,,,,,,,,,,,,,,,,but....i know how to fix it.
the way to fix it is take a air gun to the strut nut on top(the noise is just from it being loose)

 

tried that......... but i did get the feeling that the impact i was using was a little on the weak side....

either way, there's no reason for the fronts to be loose.... the rears are pretty common, but then again, i did do the washer mod...

ill check again this weekend. this time with a big *** cheater bar.

 

bumpstops maybe?

 

It's possible to have hat to the spring on wrong and still be able to install it. The hat is on an angle and if it's not right it will start to hit stuff inside the fender. Just because the three holes lined up on the top does not mean it's correct, that part will rotate to fit independent of how you have the top perch aligned. Unless it's just spring in the perch noise, something like this:

http://www.scoobymods.com/forums/showthread.php?t=5826