We have been replacing many DV solenoids, and especially the o-rings, this spring. I had to replace one faulty solenoid, 6 leaking orings around the solenoids yesterday, on a 19 zone system. System is less than 2 years old. I've probably replaced 20+ o-rings this spring, and now I have 20+ solenoids with no orings as our suppliers have none from Rainbird. Looks like I will be changing to Hunter or the Irritrol 2400 or 205 for valve replacements, and only stocking the DV for repairs. I'm seeing a lot of RB failures lately, and getting tired of it - issues with new 5004 rotors, and ESP issues. I hope a rep reads this and can get these issues worked on. the solenoid/oring issue has been an ongoing problem, and many people are not happy about it.