I recently purchased a form 6. It's great. I been using it mostly as a clitoral simulator than a g-spot toy. I love the vibration the bigger end brings. I get pretty satisfying orgasm from it. Problem is I been getting rather high-pitched noise from the bigger motor. It sounds like a high-pitched constant buzz. It's really not something I enjoy listening to.

Does anyone else have this problem? Is this normal? or do I simply have a defective one?