I have a loud hissing problem using my Rode NTG 2 when it was hooked up to my Tascam D40. When I record from the internal Tascam mics, there isn't a hiss. So I think it's my Rode mic that is causing the hiss. Has anyone dealt with this before? I've tried different input levels and always have the problem with mic. Should I get it replaced with my warranty or is this something I can fix?