I'm just curious and I'm sure this has been discussed before, but all the discussion on the new AP, has got me thinking about this. It's rated to 40RFing here, but only 35 in Canada. The Marathon is rated to 35 here, but only 30 (right?) in Canada. So how is the testing different? Should I consider turning DD at the Canadian limit? I'm just having some doubts about seats that pass "just enough" in the US that it doesn't in a Canadian test. Can anyone offer some insight on this? TIA!