Most people say you should have your regs serviced annually. The rest of them just dive and never even think about it. I'm wondering though, does this mean every year have everything in the first, second and octo replaced? diaphragm, exhaust valve, pistons, orings, everything? Or just to have it looked at, make sure the IP is right, etc. I know when you get it looked ati, if something was wrong they'd charge you extra to fix it, which makes me think yearly I pay $20 to have it all tested and if anything looks wierd when they look at it all, they'll replace it and charge me more. And then I know alot of stuff doesn't need to be serviced that often, you just do it to keep a warranty up. So I'm confused. What exactly do I need to do everyear: replace everything rubber or just have it looked at and replaced if necessary?