Suspension bob... riding behind Connie last weekend I noticed she was bobbing a bit. So I tried to see what was doing the bobbing and it turned out to be the Brooks saddle rails and to lesser degree the seatpost. I couldn't see the rubber suspension moving. I had a similar issue with the Mini - even after I replaced the rear suspension with a hard piece of plastic, it still bobbed at a certain cadence - saddle and seatpost again.