I have the same unit, with the same trouble. I took the 6265-P1 apart & found nothing wrong. It never had any leakage problems in 10 years, so I didn't think it was the fluid. I even bought a used transaxle, and found it had the same problem. I am going to replace the grease and the fluid next. ( I keep thinking of my SUV, and having to change the transaxle fluid every other year)
tim, November 2008