I have the same issue with my Arai lid. It's not that bad but I do want some more space in the chin area. I also had a rf1200 but the fit was too loose or narrow.I run an x14 by shoie, I would say the rf1200 is great too and actually better for most riding situations and can be had for much cheaper. I love how light the arai lids are but my chin tends to bump the chin bar while doing pretty much anything so that is why I went with shoie
What is your return policy if the fit isn't right? Not using it for a ride of course but to check fitment.Hard to go wrong with an Arai or Shoei of course. Bell has a nice line up as well, the RPHA helmet from HJC has come a long ways as well. Feel free to reach out for more information, shoot me a PM or a phone call and I will be happy to help.