My 10 year old daughters ½ size rental bass, is in need of a new set of strings. In addition, the strings seem tense, and are high at the nut, making getting the notes in half position fully stopped, hard for her. She has three years of elementary school playing, the last two of which were while taking private lessons. She also has all-county orchestra experience, and so is pretty seasoned for one so young. I am hesitant to ask the rental agent to have the nut reworked to lower the action, as it is already summer and the bass is fully expanded, and the A and B on the A string are already buzzing slightly, even when correctly stopped. Since she will be using this instrument at home all year, and using it for her NYSSMA recital and (hopefully) for all-county again, I want to make sure it is as playable as possible. If lowering the strings at the nut is not possible, and the strings need replacement anyway, what strings could I use to make her playing easier? Thanks in advance for any advise you can give.