for servo wire leads:
if you are a hunter or know someone who shoots archery then bumb, borrow or steal

an arrow with a target / field point. we heat the point with a torch and then just push it into and through the foam to your servo bay. of course the tricky part is laying out where to make the tunnel and shooting the arrow in a straight line (I know, poor attempt at humor)
this makes a nice clean tunnel to run your wires
Hubb