My L3130GST is in dire need of seat suspension repair. I removed the seat and suspension and there are bushings with collars, bolts with collars and appears pressed in washered collars in need of repair. The seat suspension part number is TD060-47807 and kubota does not list all the parts needed for proper repair and operation. Does anyone know the manufacturer of the seat suspension? Was it Grammar? It was mentioned that there is a rebuild kit for repair but I can not find any reference for the rebuild kit. Any one with further info will be appreciated. Thanks