I just bought a Ruger M77 30.06. It has a nice Nikon Monarch on it that I want to put on my 300RUM. The rings are kind of funny. Instead of Alan heads, it has regular flat head screws. Each ring has four screws. They are so tight that I could not get them to budge. I sprayed them down with WD 40, and I'm going to let them soak overnight. Any other suggestions to loosen them up?

Thanks Bryan