My first bass was a right hand Warwick Fortress. I am naturally right handed, but because of my little finger being bent out of shape through arthiritis, i changed to left. Took me a while to learn to play left. My worst problem was putting my fingers on the top of the fret, instead of putting it on the bottom. It took my a while to get out of that. The only other thiung i do left handed, and always have done, is to shoot a rifle.(it`s ok, i am not a nut job, i was in the army cadets as a kid). Maybe that is why it wasn1t a massive job to learn to play left.