Part time bass player, mainly a guitarist. I got myself a 90's Fender Boner bass, Precision Plus. Really love everything about the bass but I find if I don't pick the strings (open fingers) down near the bridge, I get a lot of fret buzz. Admittedly I do have the action set fairly low and this is how I like it but I hate fret buzz. If I pluck the strings up towards the neck, obviously there must be a lot more string wobble, for want of a better word. As I said I'm only a rookie. Is this a normal thing? I see a lot of guys these days with what looks like a velcro strap up behind the nut. Is that to reduce buzz or harmonics or ? BTW Sting is one of my favorite bass players. Not sure how technically good he is but I love his sound and feel. I am interested in the way he plays with his thumb down near the back of the bridge.