Recently bit the bullet and bought a scope ring lapping kit. I had never done this before and it all makes sense so I thought I needed one. This kit comes with the info for torque, lapping bar, lapping compound, levels, etc. My question is: Suggested torque for ring screws is only 15 in/lbs. Does this seem sufficient? In the past, I have always tightened them until I pretty much twisted the inluded torx head wrench. Just seems light to me, but that's what it calls for???????