Door Lock Actuator for Honda Civic Accord Front Left LH Driver Side 72155S84A11 72155S5AA01

I ordered the actuator and it arrived promptly. I had watched a youtube installation video. The first install went quickly. in less than 20 minutes. But it did not work correctly. I removed it and tried again. Same problem. Finally, I took the whole locking mechanism apart and noticed the slot in the arm that opens the lock slightly slightly narrower than the original and would lot go onto the post to open the lock. I removed the original arm and installed on the new part and it worked as it was supposed to. It took and extra two hours of messing around because of the bad part. Last time I order parts from Amazon.