Here's the story, I stopped using the brake for a few commutes to see what being brakeless would be like. I'm a lardass and the was a lot of pushing and pulling on the cranks. They started creaking when I got out of the saddle. I cinched down the allen headed cap screws that hold the cranks on just a little tighter, but it's still creaking. Have I trashed my cranks?

The bike is a black soma rush, the botom bracket is a cheapy shimano, the cranks are suginos, and I'm a pisces