How loose should the pressure relief valve be??? I know this is fairly hard to quantify. I had read somewhere you should be able to pull it out with a magnet. I don't have a strong enough magnet I guess. I can gently pry it back with a screwdriver from the filter side and the spring has enough pressure to push it back. It moves without a lot of force but I wouldn't say freely. Is this only a problem if my pressure is too high?