Hi, i'm desperate for help, I got water in my gearbox oil so replaced the seal. On inspection the shaft was worn so replaced that to, yet after 15 min running the oil contaminates with water again! the coolant level hasn't seemed to have dropped. Is there anything obvious i'm missing?   In fairness I haven't replaced the O ring seal on water pump so don't know if that is letting water in when I ride in the wet/ wash the bike? could this be a cause?   I'm running out of ideas now so any help