I have no dyno info but I can get the throttle butterflies to wide open position. In fact they go a little further past that and the actuator linkage on the front carby actually fouls on the small tube near it – you can make it out in one of the pictures I posted on imgur: 
So Iβm guessing itβs been de-restricted, which seems fairly common here. Iβll be able to tell when I ride it but until I get it registered Iβm reluctant to do so on public roads.
Thanks for the info, now onto sourcing some better front forks, but thatβs for another thread π