Knock. Knock. "Hey Mrs. Jones, about that valve not working properly. I found I can replace the solenoid and get it working again. But I have recently found these really smart, cool guys on this website called Lawnsite, and they've told me different. They say I need to change the entire valve to something more professional. And they say I should change them all. I doubt your system will work properly if we don't." Knock. Knock. "Hey Mrs. J, I have this huge valve box dug up, and noticed that the PVC pipe is only 1" and it's Class 200, not Schedule 40. I read on Lawnsite this isn't correct and we need to change it all out. Plus I don't see any indication of primer on any glue joint. So we really need to change out all the PVC mainline. "I also noticed that the wiring is too small of a guage and could heat up and burn your home down. Boy I'm glad we found this now, I'd hate to see your house gone." Ding Dong "Sorry to bother you again, but dang it I keep finding all these issues with your system. First off, instead of that big wooden box around the valves, I found that I must replace it with a professional plastic type box. The wood will rot in another 10-20 years. Also the wiring is not in conduit so I'm going to run a new pipe and install it properly in case it ever needs replacing again. Plus I need to install water resistant wire caps. I can't believe these haven't rusted away yet or caused a fire. Aren't you glad I found these things out. Oh and that Home Depot Toro controller you have, not good. We have to replace it with a Hunter Pro-C or a Rainbird ESPm. That controller is not professional grade and not worth keeping. Plus we can add more zones later on and just add a module." Next morning Ding Dong "Hey Mrs Jones, I'm back. Hey most your zones are designed at 15 gallons per minute, but there is no way your 3/4" pipe should allow that, so I need to redesign most the zones. I'm glad I found Lawnsite because these things really need to be fixed from what they've told me. And all the heads are on cut off nipples instead of swing pipe with marlex ells. So I need to change those too." Knock Knock "Hey Mr. Jones. Has the Mrs. told you about the great job I've been doing. I know I've worked for you for 10 years now, and we've built this great trusting relationship, so you should know I'm doing what's best for you. Hey there is such a mix of rotor heads here, we should change all of them out to the same kind. Lawnsite guys tell me the stainless steel Hunter I-20s are the best, and that I should only install the best. You also need a rain sensor in case they are mandatory 10 years from now. So I'll put one of those up as well." Third morning "Hello Mr. j, glad I caught you before work. Rather than allow your system to drain on it's own like it has for 20 years, I am taking out all the auto drains and you'll have to pay me $60 to blow it out with an air compressor for the winter. Every year. I know it's never had freeze damage before but it's about time. See ya tonight!!" Ding Dong "Hello Mrs Jones, Hey can I just call you Patty? Patty, your backflow preventer really needs replacing. Right now it's a PVB but we should change it out to an RP. Better protection and the laws and regs may change sometime and all will need to be changed anyway. Better now than later. Oh and I found out that this never had a permit pulled before installation so we need to get one of those too. I'll have to find someone who can do that for me unless you want to go get it yourself. Go back to your card game I have work to do." "So Patty and Jim, what do you think of the work I've done? The system is going to water pretty much the same as before and your grass will stay just as green, But now you have this much better system which is also safer and meets professional standards. I can't believe this system actually worked before. Who the heck installed it? Oh I'm sorry Jim I didn't realize you and your late father had. Well this is why you should hire a professional to do it. So here is my bill, I'll just wait for you to get the check book. Hey how are the two kids in college doing? College sure isn't cheap is it?"