I believe I have debris stuck inside one of my Jandy Never Lube diverter valves. My question is: Can I just pop off the handle, unscrew the 8 screws and take the lid off to dismantle it? Is there anything I need to prepare myself to go wrong? Like do I ALWAYS have to replace the o-ring, or whatever seals the valve? Any input would be appreciated. It just seems too simple to be true, you know what I mean?