Is it possible that the any drips now are coming from the frame or residual areas holding fluid from the original leak? The description above sounds like where a dip stick tube may go into the tranny. That should be fixable unless maybe the tube itself is warped and doesn't fit its area well.... Just a guess though...

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Richard
Sir Snaps-a-lot, 9 Time Dragon Slayer (54 runs!)
2011 X5 50i Alpine White, Biege Nappa /Lt Poplar M Sport
2009 Z4 35i, Black Sapphire/Ivory-Black/Anthracite

Gone but not forgotten: '08 550i, '06 X3, '06 650i, '02 M5, '99 540i