I have a softener that is on it's last lap and may not finish. I have been quoted some outrageous prices on new systems that I just can't possibly afford. As I understand it, I have an Autotrol Series 155 Control with a 460MP timer. I don't know anything about tank size or if it matters in this instance. I've manually regenerated it twice and still no softened water. Plus it leaks. I know that it needs replaced or rebuilt. I guess my big question is can I just put a different control on the system as a direct replacement? If I can, what should I get? I found a couple of used ones online and one appears to be the exact same thing and the other is what appears to be an updated model. Can I just install one of these, make sure the settings are the same and get a little more time out of my system? Or if I were to purchase a new one, what would you recommend? Like I said, I'm trying to do this is as cheap as I can for the time being. I thought about buying a rebuild kit but that seems like too much work for someone who has never done it before. Thanks to anyone in advance.