Yep, did the Part 2 mod on mine in about 30 minutes.
Pano roof is now all good and personally I don't need the rear section to tilt, so it will stay this way!

I found that the best tool for cutting off the two triangular plastic drive tangs is one of those 'Renovator' multi tools fitted with a plastic cutting blade - goes through these parts like a hot knife through butter, so you need to exercise some control/restraint when cutting.

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Current:
2004 X5 4.8is - Le Mans blue/Cream beige
1994 E31 850CSi - Sterlingsilber

Previous:
1987 BMW E28 M5 - Delphin-metallic
1976 BMW E3 3.0Si - Arctic-metallic