Hi guys-- I had a repair call Saturday for a system that I DIDN'T install and has been in the ground roughly 14 years. All the rotors in the front lawn are Hunter PGMs--which are long deceased, if I'm correct? The homeowner states they've held up surprisingly well, but many are not rotating anymore, etc. They've gotta be replaced. What would be a good choice to replace all the heads with? It's a small system with lots of pressure, but I'd rather not tear up his whole lawn and re-do the entire system--I'd just like to replace the heads, even though the system could be designed better in regards to location of the heads. Problem 2: There's a long narrow strip of lawn, approximately 12 ft. wide, that's watered by pop-up 180 degree sprays located along each side of the strip. They're some bargain basement heads that I'm not sure what they even are! Most are not working anymore and need to go. The house borders the narrow strip, so I'd like to keep overspray to a minimum. What would be a good choice here, again without re-doing the entire system design? Are sprays still considered a "modern" design? Thanks for all the help!