You're better off going without them, and just making sure the screws are tight. The lock screws can actually CONTRIBUTE to cracking forends, b/c if the forend shrinks or swells with age/humidity, the lock screws won't allow the attachment screws to tighten completely. The 682 has them as well, and most people pull them out and throw them away.
When I install wood on my Yype 3 guns I use cap,screws to do the initial installation. Once the Forarm is assembled and tight I remove one screw at a time and replace it with the correct Perazzi screw with Locktite including the set screw. Since I started this proceedure I have no losing problems.