i have been noticing my x5 kicking/jumping when I switch to Reverse gear. doesn't happen in the morning when i leave the house to work. Seems to happen more when the car is warmed up. I have had the transmission serviced by BMW dealership. they replaced the pan, filter and did a fluid flush I believe. Is the transmission going bad?!!

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2007 BMW X5 4.8i
2013 BMW 535i xdrive Msport