Well first off all, the Hip carry shouldn't hurt... so you may be either in a sling that doesn't fit...or maybe you have it riding wrong on your shoulder... any way you could post a picture of your hip carry? I could "diagnose" whats going on easier that way!
As far as links... your best bet is to go to
TheBabyWearer.com and join. There are AMAZING resources for every carrier you could possibly imagine...and they have an amazing group of RS mama's that can answer annnnnnnnny questions you could possibly dream up!