So in my gusto to get the helmet finished I may have messed up in a couple of small places, the helmet fits together, but I'm getting a bit of a seam gap from the back, it's only noticeable in a couple of spots however. Any recommendation on how to get rid of those? So far the only solutions I've come up with are to either grind down the other spots in the helmet to match the new lines. which is risky. Or to attempt to patch it in and paint it to color and hope that wherever I spot fill in holds. Or lastly run a mesh or some spare ABS strips along the inside of the seam and hope it can be covered in paint. Any recommendations?