My Corbin saddle went on today.....definetely raises the rideability factor a notch or two.Pressure points are history and you really feel placed in the pocket but still able to be rider active in the twisties.My set up was with the BRP sport rack.....made the install a little more involved than with the BRP std. tail piece......you have to loosen the whole sport rack assembly , top and bottom.Looks like the Corbin saddle was designed with the std. tail piece as far as the passenger seat is concerned.Installed the stock BRP seat shock as per Corbin instruction sheet.....alignment was not precise but worked o-k with slightly more downward position pressure to secure.However after just about finishing up the total install, went to release position to pop up seat and whoa....this baby was dead on locked in place!!The stock seat shock is mounted to the rear and dead center on the BRP seat but to the front left of the Corbin rider saddle....the shock ,with the seat in the down position for 30minutes, had lifted the left front wing of the seat slightly but enough, throwing the latch pin lip under the hole opening and the swivel spring plate activated by the key position was useless.We had to remove the seat from the Corbin hinge assembly and deceided this shock in this position was going to be an ongoing problem.....So MY install is without the shock and the alignment on my Corbin rider seat is dead on perfect with closure and opening so really smooth.I talked to Corbin and they said they were installing stock shock with no major issues.....it did require some pressure downward on the right side.Anyway I believe some others have opted for leaving the shock off .....guess it's up to whether you like pushing and shoving to open and close....I don't!!