Hi Is there a general rule of thumb for increasing the main jet size after drilling a couple of holes in the top of the standard air box ? The MC18 is standard with the restrictor wire unplugged . Can I just go up one jet size ? I know getting it on a dyno is the way to go or should i just gaffer tape over the holes and leave it alone ? I want to do the Brands track day so I don't want it nipping up going in to padock hill . Thank you.