Hi, i own a suzuki gixxer. Recently my service center guy told me that it has problem with rear suspension. Its oil got leaked and it is very poor in weight management now (I mean it goes down when you sit on the bike). What would be the cost of rear suspension kit of gixxer? How it could happen? My bike is 2.6 years old and ran 30000 kms. What could be the cause for shock absorber failure?