Alot of wood grips will get lose screws. You can use a small rubber oring under the head which usually cures it. The Berettas factory grips have a little star washer that usually doesn't get used with the wood.
The other option is a little fingernail polish. I don't like loctite to much since they should come off from time to time for a thorough cleaning. Many end up cracking their grips from overtightening so they don't come loose, not a real good solution.
In Memory of Paul "Dietrich" Stines.
Dad: Say something nice to your cousin Shirley
Dietrich: For a fat girl you sure don't sweat much.
Cue sound of Head slap.
RIP Muggsy & TMan
"If you are a warrior legally authorized to carry a weapon and you step outside without that weapon, then you become a sheep, pretending that JOCKO will not come today."