uBlox cover...leave it on, or take it off

I had to replace my uBlox due to a crash. Since the replacement will come with a cover, just wondering if I should leave the cover on, or remove it like on a stock Iris? Unless there is a real gain to leaving it on, I will remove it as it is just then extra weight.

Hi Ronaldo,
it wont fit the present IRIS mounting spot without removing the cover on the 3DR supplied ublox.

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