like he said, to fix your leak its just a little round seal, really simple to replace. As for your springs they are fine, dont' give it another thought. Most leaf packs are'nt tightly held together against eachother some gap like that is perfectly acceptable. if every leaf is separating pretty far apart you might have just broken the little clips that hold them together tighter, there is a few of them on each pack and cost pocket change to replace.
Eric