Your arrow weight is fine. Sure a heavy arrow quiets things, but 25 grains isn't your problem. A couple thoughts first off. Bows are quieter set at their higher poundages. I mean if your bow is rated 60-70 it's much quieter at 70 with equivalent arrows. One piece quivers are notoriously noisy, as are things like the spring on a Kwikee Kwiver. Limb saver have to be installed in the right place to help with the sound. Cat whiskers are quieter than string Leeches. Make sure your stabilizer is tight. If you don't have one, add one. Better yet, rather than add more limb savers, add one of their enhancers with a short heavy stabilizer screwed into it. Have someone else listen. Have someone else shoot your bow to see how noisy or quiet it really is.