I recently bought a Cort 3535 5-string, and it is strung through the body. It has a really REALLY low action (which I am going to raise). But my main problem is how loose the strings are. Is there anything other than using a lighter gauge strings that I can do to get tighter strings? I'm wondering if raising the action will have a significant effect on this, especially as it is strung over the bridge then through the body?