Here you go....

Hi just purchased a 818 H1 my bad shot is going hard left infact I’m always fighting this. My irons are 2 degrees flat what do you think would be best setting. Weight in head is neutral. Ideas please

Is it just the occasional bad shot or are they all going left? If all are left, adjust the club. If the occasional snap hook, have someone look at the swing. You don't want to adjust the club for the bad shot only to mess up the majority of good ones. If you want to try the club adjustment, you are on the right track. Change the weight to fade and set the club to something like C-1. You might also consider moving up to a stiffer shaft.