I have a B22 FV-SR. I tried to remove the 2 action screws so I could work on the stock, like I've done half a dozen times. But instead of the screws coming out of the action pillars, the pillars unscrewed from the action leaving the pillars and action screws stuck in the stock. Both pillars, not just one. I could probably make a tool to get them out, but... Anyone run into this before? What did I do to cause this?