Yeah, I put new springs on my '97 Accord about two weeks ago. When reassembling the strut assembly, I wasn't sure when to stop screwing the nut down onto the top of the strut assembly. I didn't remember it stopping at some point. And it looked like I was screwing it down soooo far that the piston (bolt) was going to hit up against the frame when installed. So I just stopped at some point that looked like a good stopping point.

Well, I had all kinds of rattling and shiit going on in my back end on the passenger side. Couldn't figure what the hell it was. I thought I blew the shock absorber since I've heard stories of this happening when doing a drop on Stock Shock absorbers. But there was still control.

Well, after I took the wheel off yesterday and pushed down on the axle, I could hear the problem in the strut assembly. So I removed the strut assembly and begin tightening down the lock nut some more. After about three turn, the mutha fukca stopped! I was like, "oh". So I put the strut assembly back in and there was no more noise.

I then when and tightened the front strut assemble bolt (since it's easily accessible in the engine bay). The driver's side was tight, but the passenger side still had about 3 turns left in it before it tightened. Dammit!

So yeah, when you're changing your springs/and or struts, go ahead and tighten the top lock nut all the way down till it stops.