Gap in throttle housing is driving me crazy!

[Stichill]

Try taking it off the handlebars and fitting it together without the throttle tube inside, to get a feel for how it is supposed to go together. I suspect that the throttle tube is out of position to the left. Try positioning it more to the right, i.e. make the space between the white cable cam and the black housing smaller. You will end up with more gap between the outside of the black housing and the inside flare of the grip.