I operate and service an older model Kubota F2400-1 with a deck attachment Model RC72-F24. The gear box on the deck has been rebuilt at least once that I am aware of. Is this particular gear box prone to leaking from the rear seal. In addition, has there been any recalls from the manufacture on this particular deck model? Ideas have come up from using thicker gear oil to throwing some sawdust into the gear box when topping off the gear oil. Any ideas and feedback will be appreciated. Mow Happy