Ok need some help, which screw should I use? Short one is from holosun(blue Loctite) and the next closest screw is the screws that came with my m&p 2.0 compact optic ready. I know the longer ones from S&W would bight in a little more but don’t know if it’s to long! The shorter screw from holosun only bit in 2 to 3 threads and the longer ones went in about 6 threads! Thanks for your help!