I was inspecting my Ruger Blackhawk today and noticed the front grip frame screw was missing. It has had around 1600 rounds fired through it and I have no idea when it fell out. I checked other screws but none were loose. Is there a problem using locktite on the screws or is there a better product? Ordered another screw from Numerich at a cost of $4.45 for parts and $4.95 shipping.