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Install the end of one lock at 90 degress from the pick lock groove. Use a stiff small bladed screwdriver and insert the tip into the pick lock groove while you wedge the lock into the groove without kinking or deforming the lock.

After the first lock is in place, seat the lock by solidly hitting the wrist pin with a brass drift pin.
 
Now install the connecting rod and the second lock. Seat the second lock in the same manner as the first.

Just as a precaution, we recommend hitting each side of the wrist pin with the brass drift pin an additional time. Perform these functions on a cloth towel or soft rubber pad so no damage to the piston occurs.