@john100
Definitely get new rear springs. Get 48231-6A780 (Brown paint spot), if you are not carrying a lot of permanent extra weight. They are slightly stronger than the standard purple spot. Toyota 48231-6A780 (482316A780) SPRING, COIL, REAR -...
So, I just received a pretty cool item from @nuclearlemon that I am going to bring to the Pig Party and find a way/reason to raffle it off to someone at the party;)
You'll have to go inside the door and take it all out in order to check what's going on. There's a lot of moving parts in there, but nothing too hard to figure out.