I have just put a Realist on my new bass and am getting a kind of high-pitched buzzing noise when I play. This noise is present whether or not the pickup is on. The feet of my bridge are not big enough to cover the entire area of the Realist and I'm wondering if the buzzing is the bit of the pickup that's not under the bridge foot vibrating against the body of the bass. Has anyone experienced this or similar - and have they been able to solve the problem?