Carl, You are absolutely correct. It appears that the original builder routed the rudder cables through the already existing holes and didn't drill any new holes in that area.
Bob- That being said, before I drill through a spar I feel more comfortable calling vans and talking to them about it. So I'm waiting until tomorrow to proceed with anything. Thanks for your concern. Hopefully Carl and I are correct and won't need any doublers or fixes, but we will see what they say!