I have a MM Sterling fretless 5 string. (Not to be confused with Sterling by MusicMan.) I love this bass but it is neck heavy. I took off the machine head for the G string to see it that helped. It got it much closer to feeling balanced. Just a little more weight reduction would be near perfect. Are there replacement machine heads that will reduce the weight be a little more than one stock one? BTW, these are the stock Schaller heads, stamped MusicaMan.