X3 moonroof leaking

[Maxey]

Hi Guys Drum and XX3
The X3 is really great no problems really just moon roof issues keep coming up The dealer is good and fixes them but I like to give them the best info as what is the problem--- When I pour water into the drain area on the roof the water comes out of both the drain and the inside of the front pillar around the the top join of the roof lining--- so I think the drain tube isnt blocked but may not fitting properly to the main frame of the moonroof-- I really would like to know how to remove the cover of the side pillar to see if I can fix or see where the leak actually happens any ideas
Maxey