Okay, so they are non-module, I'd still use them. If you're not sure you want to stay in the hobby, it's not worth spending the money for new stuff. Just get what you have checked out by a certified shop and, if it checks good, use it. If your servos are very old, it might pay to have the leads on them replaced as well. I have a brand new servo that doesn't work and I'm pretty sure that's the reason why