Step 4: Inserting and fixing the device into place.
Make sure that you insert it as not to impede the mechanism.
It must line up exactly or the lock will fail.
Once you have inserted the device. (Notice how I'm calling it a device now? LoL.)
close the locks shaft as to force the insert against the side walls to set.
Wait until it has cured and release the locks shaft. It may need a little help as some glue may have made contact with it. Once out clean shaft of any excess glue, apply some lubricant to the shaft and lock mechanism.