I'm not so sure about rigging to sizes printed on sails , even with correct parts . They can be out and change with time .
Ive had a 2014 NP that was about 14 , yes 14 cm out of whack . An obvious misprint . I use correct mast and always rig to the crease method which is only sometimes perfect to the numbers .
Half of my sails have a my Texta number written next to the printed number , some over , some under . I have it so when max crease I have about one inch gap pulley to pulley , just in case I need a bees dick more . That gives me about two inches gap when underpowered .
Mabee I'm a bit anal but it makes me feel sick inside when I see on other peoples rigs more than two inches gap pulley to pulley

Please tell me I'm not alone or I may seek help .
I need to get out more