I am restoring a 1927 Chevy truck... it has the old style lever brake where you compress the handle and pull the brake cable and then release the handle and a spring pushes a lever to lock the brake.... In other words, there is a spring in the handle.... bet I hav seen this spring in the handle 100 times... The problem? Mine isn't there.... can anybody tell me what it is called so I can look it up on the Internet or tell me a store that might have something that will work? Any help is appreciated.... Thanks! Dennis