Hi all, so we're leaving to ride in Colorado on Friday and are taking my little stomper '05 440 as a back up. I bought 16.2CR domes for it from another member on doo talk. They require 110-114 octane near sea level. Does anyone have any experience/knowledge on what the minimum octane requirement would be at 10,000ft? We're thinking a 50/50 mix of 110/93, but are really just guessing. Thanks!