Does anyone know the size of the allen head set screws that go into the adjuster screw on a KS-5 Special. I called Krieghoff this morning, they wanted $9.00 each, and the woman that I talked to could not tell what size the set screws were. She was able to tell me that the allen wrench was a 1.5mm, but she could not find the diameter and length of the set screws. I was going to check with Fastenal or Tacoma Screw to see if they would have the screws. $9.00 each is way out of line.