I'm a guitarsist but just bought a 5 string bass to do some record with and I need some advice on how best to tune this thing. I found myself wanting to tune the bottom 4 strings like a 4 string bass and dropping the biggest (top of neck) string to a D because if I tune it any lower than a D, it seems to be almost unusable becuase it's tuned too low. Any suggestions or ideas? I bought it used and when it arrived, the stings has been loosened so I have no starting point. Thanks!