Hi. I just saw these codes pop up yesterday after I replaced the harmonic balancer on my '99 Durango. It barely runs, feeks like it wants to die. I know the codesare for the crank and cam sensors. Now, I jamed a large screw driver into a square hole next to the flexplate to the motor from turning as I removed the crank bolt. I noticed I accidentally messed up the square hole. Are these holes what the crank sensor read? How can I fix the rough running motor? Thanks a lot!