u/earthcircle

Hi all, I have a Shoei RF-1400 Beaut. I noticed that air leaks inside the helmet from the chin area and so much so that my eyes turn red. All vents are closed. I even checked the visor fitting with a small card and air seal is perfect. When I cover my chin area with hand, i notice less air. This is even after installing the factory chin curtain. Has anyone found a thicker chin curtain or an aftermarket version? Balaclava is an option but that is another piece of gear I need to incorporate in my getting ready routine. So, looking for alternatives

I ride a Yamaha MT-10 SP which has fairly upright position with no windshield.