No, not really, or at least, neck dive isn't the main "problem" high-mass bridges were originally introduced to solve. When first marketed, their main benefits were supposed to be tonal improvements--more clarity, stronger attack, longer sustain, etc. I'm not saying they couldn't help with neck dive (though I don't know how much they actually would help), I'm just saying that wasn't the initial primary purpose.Isn't the point of a hi mass bridge to add body weight to fix neck dive?