How much does the shape of the board affect the sound and playability? I have a medium action and i don't want to go any lower but I would love to have more growl in the sound. I don't want the strings any lower because of the right hand. I need to feel the strings not the board. If they get too close I find it hard to dig in. I don't have an adjustable bridge as i was told it would affect the tone of the instrument. Now I'm thinking i should get one just to experiment.