So I got an old Brooks B72 Saddle for $1. It's a handsome piece of work, but is double-railed and so required a "seat sandwich" ($15). Yes, the seat sandwich costs 15x the saddle. Sadly, the Brooks's rails aren't quite parallel, resulting in a slight bit of tension on the Seat Sandwich which in turn results in enough give that the microadjust stem tends to change angle suddenly. But if that were the issue it's be fixable. Sadly my Brooks has other problems. First, it's slippery as all get out. Second, it's surprisingly uncomfortable for me. Too wide? Wrong shape? I can't tell. But my Tikit's default Cloud 9 saddle is significantly better.