I've decided to use a single-action, Gibson-style compression rod. However, the rod channel is going to be a bit different. Instead of a concave route, it's going to be a straight route with one end higher than the other. It (the channel) will end up being parallel to the body of the instrument (the neck is at a two degree angle) rather than the fingerboard. Another way of explaining this is: If the fingerboard is a mirror, the route will be the reflection of the strings. How do I go about making such a route?