I have a 62 RI Jazz Stack Knob that I absolutely love. Tone is fantastic across the board. My problem (and I don't have this problem with any other bass I own or have owned), is I can't keep my E string from vibrating and creating overtones after I move my thumb from a muting position. I float my thumb and anchor it on the string above what I am playing. Do you think this may be a bridge / pickup problem or is inherent in most Fender Jazz basses? or Is my technique at fault? Thanks in advance.