How move rooflight light bar forward?

[finall]

Problem: Roof lightbar has 4 lights (see photo). Sunroof wind deflector interferes with 2 center lights. Light from these is reflected into the interior of the vehicle through sunroof, and is very annoying at night. Not sure why GM had this light bar set so far back on the roof. It prevents a person from being able to look out the sunroof, or access the roof lights by standing up through the sunroof. Bad design.

Solution: Need to move this lightbar ahead of the sunroof wind deflector.

Question: How do I do this? The roofbar has 2 stops (one on each side of the roofrails, barely visible in photo just to front of lightbar), that prevent it from going further forward and hitting the sunroof wind deflector. It will not clear it.

So, can I temporarily remover the wind deflector, or remove the light bar to clear the wind deflector and move it in front of it? If so, can anyone give me the steps to do this?

Has anyone done this? These light bars came as standard stock on Special Edition H2s. SInce there are thousands of SEs out there, surely someone knows the answer?

Please help. THanks!