I purchased the RBR Hairpin Saddle from Hibikes and had the problems reported by other members with the seat not staying level on a straight seatpost,and turning sideways on a layback seatpost. The hammock design also sagged low enough to rub on the top of my straight seatpost,enough to gouge out some of the underside of the leather.Felt very uncomfortable.And I know how to adjust the spring tension to the max. I think that it is a great looking,low cost saddle. I weigh in @ 235 in my birthday suit.The hard chrome seat guts,with practically non-meshing notches caused the slipping. This summer I rode a friends Brooks saddle with chrome seat guts,and it too would not stay level and slipped to the side. He is a lightweight compared to me and had this probem. Previous threads here, some guys spot welded,or drilled and pinned.And added laces to stop the sag & spread.OK,go ahead and laugh: I fixed mine by placing a deflated Wilson Mini Size Football ( $8.00 Wally Mart ) under the leather,with fill valve lined up with a hole in the top of the saddle. Insert a standard needle fill valve through the hole and inflate my air suspension to my liking.I also replaced just the chrome seat gut adjusting parts with standard parts,and reusing the chrome parts that show on the outside.