I am working out of the book " Introducing Maya 6 3D for Beginners" I am doing the catapult. I am in the process of making the wheels.

I have made the wheel. I have extruded every other face of the wheel to make the studs. Now heres the problem.

I have all the extruded faces selected. I select the scale tool to form the spikes but when I go to scale them all of the faces go in every other direction. How do i scale them to make them uniform all the way around the wheel.