Hey guys, So...long story short, I bought an Evo a while back. Later on I bought a Fastfire 3 to put on it. The sights on the Evo are removable with 2 allen screws on each that clamp to pickatiny mounts. The front came off fine. The rear sight has one stripped screw. I cant get it. I tried the hex / star wrench, rubber band, you name it. I don't have a drill / bit that will drill it out. Any other ideas?