I recently bought a Mark 4 with the M3 dial in 308 from another member here but want to use it on my new custom 3006. What I am wanting to know is can Leupold make me a M3 dial that is not setup for a specific caliber but just set in 1/4 adjustments. I know I can call Leupold direct and I have tried but every time I call there is a long wait so just wanted to know if someone knows. Thanks