recently put an add-a-leaf to my rear leaf spring pack and now when im going around corners it feels like my rear end is swaying out from under neath me and when im driving and make a sudden movement i get a swaying back and forth effect. I believe my ubolts need to be torqued down more but im not for sure...some people said that my shocks might need replaced. im not 100% sure on what the problem is...any help would be appreciated..thanks