I need help with the Key Puzzle!

Hint 1 of 7:

The object is to insert the correct keys in the locks and turn them to open
the safe.

Hint 2 of 7:

Any key can fit more than one lock.  Identify which keys turn which locks.

Hint 3 of 7:

Then begin with the key that fits only one lock and continue to eliminate
possibilities until you have all keys placed correctly.

Hint 4 of 7:

No clues exist to help, so the full solution is below.

Hint 5 of 7:

Label the keys 1 to 8 from left to right.

Hint 6 of 7:

Insert the keys as follows and turn them as you insert them:  4 8 1 top row

Hint 7 of 7:

Second row 3 6 2