I had just drained the tanks, replaced the dryer filter in the steering bay, but I agree the O Ring did look a little funky and the end of the spring, the magnet end looked like it had some oily film on it at the contact point, but otherwise the O rings looked like new, just some crap on on one edge of the large O Ring. Glad to know how to repair this now and what it does in the first place. After about ten years I might, just might have a handle on these important items.