It should be OK to use caulk. Regarding the stripped screws, just remove the screws, use a toothpick to measure the depth of the hole. Break off a few toothpicks just short of the depth of the hole and stick two or three pieces of toothpicks into the hole. Now when you screw the screw into the hole, the toothpicks will provide a bit of traction and take up some of the room in the whole.
This trick works great!. I've used it many times in many different applications.
Enjoy,
TIC
This trick works great!. I've used it many times in many different applications.
Enjoy,
TIC