Thanks, guys. You are right, JD that violinists change direction with their bows but a good violinist has technique to the point of not losing the sound when changing direction.
This "loop" sound only bothers me when I am playing soft sustained passages in a song. I thought perhaps someone came up with using the LFO, EFFECT, TONE, AMPLITUDE, PITCH and FILTER in SOUND EDIT that might have an answer. I have never fully understood these controls. This would be an excellent subject for someone to really explain these controls and what they do to a sound.