Trijicon hd front site - Trijicon HD XR Front Sight

I love these sites. I love the XRs. The acquisition in daylight is incredible. Makes front site focus easy. Only issue I have is this is my 3rd front site post from trijicon. Idk if the small screw is the issue but my holster is made for this gun with the fixed sites and I have sheered off the front post 2 other times. Idk how it happens. I just look up one day and my front site post is gone. I use red loctite on it so I know it’s not coming loose. It gets 3 stars because I’ve had to get 3. Actual functionality is 5* when it stays on. I think the screw needs to be longer but that’s just me.