Just bought a 2575 fs and started cleaning it and I am trying to remove the 2 front seat.I have tried all the levers under the seat but not going anywhere.What is the handle in the front of the seat for,it doesn't seem to do anything.The lever allows the seat to turn and then there is an oblong handle that I loosen all the way but cant lift the seat out.What am I doing wrong.Thanks Jimbo