I found this forum when search for information about a Rain bird RC 7-A at a customers house. I am a handyman with little experience with irrigation systems. The thread I was reading was a discussion about the amps required to close the values of an old RC 7-A system, a gentleman called "bicmudpuppy" seemed to be the most knowledgeable about this particular system. Here's my question, what is the best / cheapest / easiest to understand controller to replace this thing with? The customer is a very nice 75 yr old lady. Any suggestions?