I would not drive the car until you find the water contamination; the most likely cause is a bad radiator. Adaptation values to the maximum means the clutch pack are worn. You may need a rebuilt sooner rather than later. If you are going to change the conductor plate also buy the protective covers for the solenoids. To remove the cover you have to remove the solenoids, mark them so you will know were they go. Change the o-rings on them, also change the control valve pressure spring in the valve body # 140 993 58 01.

Lock up solenoid Y3\6y6 A140 277 00 35
2-3 shift solenoid Y3\6y5 A140 277 01 35
1-2\4-5 shift solenoid Y3\6y3 A140 277 01 35
3-4 shift solenoid Y3\3y4 A140 277 01 35