How can I stop my fingers recoiling when my thumb plucks the bass strings? I'm doing a pattern, thumb on the E string, 1st finger on the G, 2nd on the B, 3rd on the high E, and I'm trying to keep them all rotating smoothly, but when my thumb plucks the E, it makes my whole hand jump about 1cm, from the build up of pressure on the E, then letting it go, so my index finger (the next note in the sequence) has a big jerk in its motion just before it gets to pluck the string. I can still play fine now but that's only slowly.