Does anyone else find that on some rivets the margin between a rivet being too high and being too flat (according to the rivet gauge) is almost nonexistent? For example, I find that on some of the empennage skin-to-rib rivets, when I use my pneumatic squeezer with some number of washers the rivets are just a smidgen too flat (over-squeezed) according to the rivet gauge. But if I take just one washer out of the squeezer, they come out under-set (again according to the rivet gauge). In these cases I err on the side of slightly over-setting the rivet.