Forget the wrench because when you set it to 17 inch pounds (this is what Leupold recommends) you are going to tighten the screws more any way. 17 inch pounds isn't very much torque at all and you aren't going to believe it is sufficient.
I recommend that you just don't tighten the screws as much as you use to. Screw the screws down until the are just slightly snug. Then another 1/2 turn and you are about right.