I have been wearing Arai helmets for about 25 years starting with Quantum I & II's. Recently with RX-Q and Defiant Pro. I had to move from XL to XXL with the move from the old Quantum's. At this time, I have tried the Corsair X and Defiant X in the XXL and cannot get the helmet on my head, it seems the bottom opening has been slightly closed to reduce noise and prevents donning. Has anyone had issues with the new Arai's being hard to get on your head in your standard size?