When I play riffs that cover 3 or 4 strings, I find that I get a lot of unwanted tones from the strings I have just moved from as I move across the fret board. It's not noticable when I practice quietly, but when I crank the volume on my amp the ringing strings are really noticable and detract from the riff. I guess the ringing comes from the fact that I let go of the string and that causes some vibration. I'm just wondering what part of my technique I should be working on to counteract this? Just in case it's helpful for you to know, I have my action set as low as I can get it, I use roundwound strings, and play fingerstyle.