What would be the major difference between a set up for arco playing vs pizz? I purchased a German plywood bass (an Eberly ). It is about 40 years old and sounds resonalbly well when bowed. My instructor is a professional Jazz guy and he brought the bass to the luthier who set it up to play Jazz. The strings are spirocores (mediums? red windings on both ends). String height is 1/4 inch on the E at the 7th position (12th fret) and 6/32nds on the G. The fingerboard is ebony and had an abrupt angled slope along the E string. The luthier dressed the fingerboard and removed this slope. Now it has a gentle curvature with the bridge matching this curve. It is very comfortable and plays easily pizz but arco is tough. I have only worked thru page 25 on Simandl but no matter how hard I try, I can't prevent double stopping when I bow. It is especially bad when crossing from E to A or vice versa. I constantly drag the adjacent string. Of course my instructor could play a washtub with a string and make it sound good. He makes the bass sound just beautiful and thinks the set up is just fine. Nope, he does not drag the adjacent strings BUT he has been playing for 30 years. He says my tech. is fine and that I just need more practice. No doubt I need more practice, but why struggle? If a different set up would make learning easier, why not do it. I have not talked to the luthier, but it seems that if he put another bridge on it with a smaller radius, it would separate the strings vertically from each other. Too bad the bridge isn't fully adjustable like my electric. Any comments?