realskiers

Hi, I'm Gary from Florida. Regarding din settings. My concern is that my din setting at 6 is to low for me. I'm 6,2 170lbs. I'm 50 ,and ski a hard fast modern diagnal technique. So I just go the i 72's , 170cm ,and I;m afraid the bindings will realease just because I'm skiing at 45mph on some rough surface. I'd freak out if a ski came off. Just sit down on my side guess??  So, anyway can I tighten my din settings on these rail..-II?  new,2005's.     I ski Summit county.  Thanks ; Gary     P.S. Looking for a place to stay for a month in Feb.-March.