In order to properly drill out the rear rib rivet holes, I had to remove the spar doubler. I marked down what the torque values was required to loosen each one, just to see what the factory torqued them to. Kinda all over the board. NOTE: 08/16/2022 - Yes, after reviewing my logs, I have since learned that this was a meaningless step since torque wrenches aren't meant to go "the other way". Doesn't matter in the end, as long as I torqued them correctly in the end.