Sometimes the wind has to be blowing just right and your right foot has to be 12 degrees to the left with your tongue hanging halfway out.
If youre feeling the little spring depress,youre on the right track. The key has to be in the lock.It almost takes an extra set of hands to pull on the key/tumbler assembly while youre pushing the paper clip in and holding the whole mess.
Ive done a bunch,,and fooled with them for what seems like hours and all of a sudden,it almost falls out in my lap.
If you have the proper key,it should move the tumbler to all positions.
Good Luck,