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Which of the 7 part cooling ducts for the Hero Me Gen2 are you referring to? There is a remix for the dual 5015 that tips the fans forward. You can see it here: https://www.thingiverse.com/thing:3481256/files ACWest who did that remix is in process of making versions for several of the other part cooling ducts.
Or are you referring to the heat sync cooling fan? There is no changing that, as that is core to the design.