dub city wheel removal

how modify the maisto axle to fit the dub city wheel? becasue the hole on the back of the dubcity wheel is much smaller. it looks like that litte pink thing needs to be removed but i cant get it off. help me out guys. i know its possible becasue i see allllllllllll kinds of maistos with dub city wheels.

Usually people either drill a hole through the plastic chassis and insert the axle....or you can chop off the parts from the maisto wheels and put them on the dub city wheel, thus keeping the ability to turn with the steering wheel. Its up to you.