Realizing that I'll have to do the proseal dance again with the foam ribs in the trim tabs, I decided to hold off on that task on the elevators until I can do this job on both the trim tabs and elevators at the same time. Therefore, I began the trim tabs, the first task of which is to cut wood to be clamping brackets. Such precise measurements are given for the dimensions down to the 1/32 of an inch! The marking lines I draw on the wood are thicker than that! Anyway, I almost finished the first of six blocks and decided to stop because it's late and I'm obviously tired.