Please note we have recently changed the default value of GF Low to 50%. The default Tec mode GF is now 50/70 (previously 30/70). The default Rec mode GF fixed conservatism values are now 50/75 (high), 50/85 (med), and 50/95 (low). The effect of increasing GF Low is to move the deepest decompression stops shallower. The default values of GF High are unchanged. NDL dives are not affected at all. The dives that are affected are ones that require mandatory decompression. Please see the release notes specific to your model for details.