I just purchased 2 2006 h3s with oem racks. I also purchased 2 new GM keys for the roof rack locks. So far I have only been able to unlock 1 of the 8 locks. I have been squirting pbblaster and wd40 in the locks but still no luck getting the keys in all the way or turning on the other 7. Does anyone have any other tips or tricks? I tried to get a pick from the back to un clip the c clip on the lock mechanism but no luck there either. Thanks