I bought two 5.5 OZ cans today, with intention to get the time closer to 4 minutes in the IRL category.. but I noticed something. On each of these cans, it says 5.5 OZ (158).. I'm in the USA, so I'm not sure if its a regional variant, or if the board category isn't properly named? The category i am referencing is 5.5 oz (156g). Just want to keep within the rules, and not have an advantage if thats the case by 1 or 2 chips... LOL