the size thing was easily sorted by the appropriate sized tophat washer in the end. what's pissing me off now is that you can't actually fit a chain on it cos the guard's too close to the teeth (neither the shadow or the loophole will sit properly without rubbing - even with chainline taken completely out of the equation), that I have to run a massive spacer outside the sprocket cos otherwise the guard crashes into the crank arm and that two of the teeth are chewed up already (I've had to file them down ) despite not ever doing a sprocket stall on it. in all - bag of shite. Mankind looks good, it'd have to be the tolerance cos i need 25t - I'm kind of taken by the KHE too, looks pretty beefy.