2) there is two of 'em, but they are not twins! Wait a minuet...thats correct. They are morror images of eath other. that is good.
3) I took one of the finished ones, and did a little test with the lead I have in hand. I measured the weight at 4.0 lbs, and did adjust the position on the arm for a ballanced aileron. I will use the approximate weight to cast my weights at about 5 lbs so as to trim to shape slightly, or maybe a lot, depending on how thick I make them. spedc thickne3ss is at 1.00 inches, and basic triangleular shape. I am using pure lead. maybe others used lead alloy. they are not the same unit weight. pure is heavier, but not by much.