I was reading the specs on the differant brands of springs and the Tuff Country 4 in. springs I just ordered last week only have 3 leaves. The rest of the brands all have 4 or 5 leaves in there packs. Are these gonna give me a full 4 in. lift?? Are they gonna sag??? I thought I would try a new brand, but now I'm not sure I made the right choice!! Blazin' in TEXAS!