That would be scary, Jeff!
Before you put the new bars on, make sure the clamps (top and bottom) have rounded edges. If not, use a file to round them off. Also, make sure you torque them down properly to avoid overtightening.
As a general rule, I always replace mine a week before I bend them (new bars...fall down...bend 'em), but I don't follow a schedule for replacing them.
Good luck,
Richard