I've been having tuning stability issues with my s470b lately. Every time i use the whammy bar, the g-string drops way out of tune, but the other strings stay fine. Can anyone offer suggestions as to what the problem might be? I've already tried replacing the strings, but to no avail. I don't know if its because something is wrong with the thumbwheel setup in the zr trem or if it is because of a problem with the neck (it's the first time i've used a floating trem system, so forgive me if this is a nooby question). Any feedback would be greatly appreciated.