now i have to say i'm new to 12th as well so what i said maybe completely wrong.. but the 12th is much lighter, got less friction and has much lower drivetrain lost so in theory you should be able to run a much larger rollout. Also because the fact it's only powered by 4 cells, the motor can take more punishment than when it was powered by 6 cells..

but yeah it's just my thoughts.. so correct me if i'm wrong.

btw, are you from Auckland ??