Structural part

I printed the awesome Web 3D Guitar http://thingiverse.com/thing:1068688 and I felt it needed some extra bracing to hold the string and spring tension. Here's the part I glued on after printing.
In the pic it's printed in blue and is below the 3 springs. print it %95 solid. It has to be dense.
Here's my build in Blue, Black and Red. http://www.thingiverse.com/make:166842
Enjoy :)