Express Leaf Configuration
I've seen a lot of different express leaf configuration while doing research, and I was curious to see what the opinion was of those with much more experience than I.
Assuming that the front bead is a 3/32 dia, when filing the rear leaf, what is the proper way? Big Wide V (1), Narrow V with flats on both sides (2), a variation that I have seen of both 1 & 2, with a U cut in the center (3). In my opinion, 3 doesn't make a lot of sense, but I don't know for sure.