Throttle Return Spring on BBK Cable drive TB

I'd like to see what you all area doing for return springs. The TB has a built in spring but it feels too weak for my taste.

I'm trying to find something that will work...I've got an idea but I'd rather copy than engineer at this point in the build....

I ran my cable under the manifold with a bracket I bent up that bolts to the LS to Gen-III adapter. Probably different than the BBK though, I don't have an extra spring in this picture, but I would run it from the center of the lower bracket to the stud the lower cable is attached to.