The old style stainless gugeons work fine if you keep them
tight. Clean everything and install new ones with some silicon and lock tight. If you have a hole stripped you can run a 1/4-20 tap right in the existing hole and get new ss screw. May have to grind lightly the head of the screw for clearence from the center of the gungeon. The new aluminum ones will wear out long before the SS and cost a lot of money.