My 94 Integra LS has come down with a suspension problem on the drivers side rear.

It's basically "sagging" lower on the one wheel and I guess "riding up" on the passenger side rear (possibly just because of the action of the sway bar).

I have Tein Super Street height adjustable coilovers installed, and a Type-R sway bar/Beaks kit setup.

I'm thinking it could be one of three problems.

Initially I thought it was just the spring on the one side settling (after 4 years?) so I got in there and just raised up the one side. but now it seems to be getting worse. So I'm not so sure it's this anymore.

Another guess was that the LCA bushings need to be replaced. The bushings are almost gone. I should replace the LCAs anyway.

My other guess is that it has something to do with the sway bar. A little while ago I began hearing a sort of thumping/clicking sound coming from the back. I never figured out what it was, but it just seemed to go away on its own.

Does anyone have a clue as to what this could be?

Thanks in advance.