Looks good to me. If it were me, I'd be happy with the very slight edge gap - although would maybe paint in the gap and wipe away any excess on LED and metal with grey paint so it didn't contrast with the metal and draw the eye as much as black. I really don't think it detracts at all and integrates nicely if going for a lightly weathered look.
If going for a super shiny finish and being very picky, another option would be to make or have made a small, thin 'cover plate' for that section (with 2 screw holes and triangular cut outs that are a perfect fit) - but seriously, looks great as is and those small imperfections are in keeping with the whole Star Wars 'used future' aesthetic to me...