Hi Bob, did you mean metal-to-metal noise when hood is down and locking or unlocking the mechanism? Or did you mean the noise is evident when the hood is up and you rotate the handle? I ask because I had a slight noise from one side a while back which was cured by a tiny amount of bearing grease applied to the tab that protrudes from the firewall
If it's from the mechanism itself, that can be removed from the hood and inspected/cleaned/lubricated.