Based on the information in your post, you filled transmission using the wrong fill plug! On our 6HP-26 you must use plug "C" on the attached image to fill transmission and plug "D" to drain. If you used plug "B" to fill - you are about one quart overfilled.

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2012 X5 x35i My new toy
2005 X5 4.4 Her's (Retrofitted Servotronic Steering Rack)
2003 X5 3.0 Mine (Retrofitted Servotronic Steering Rack and Heated Steering Wheel)
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2000 540i 6sp Sports pkg, supercharged. Son's car (Sold)
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