Found the 2mm and 4mm reference on their website, I will shoot them an email.
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First up i used very fine beads for a truck tyre. Balanced better but if the valve was around 6 oclock when airing down the beads tried to exit the tyre and got caught in the valve seal, creating the leak.
for comparison i use 8oz bag in a 35” tyre (315/75r16) and table says 6oz