if theres play do this: put everything on except the nut that goes on the very top of the fork tube and the nut that goes right above the top headset cup. put the nut thats right above the headset on and tighten it with ur hands. once you start feeling any pressure stop. no put on the very top nut. tighten the top one with a wrench while holding the nut above ur headset with ur hands. this will cause the bottom nut to be loose for it to spin but the top one will be tight enough so you dont have any wobble. ive done this to a couple of scooters and it works. also make sure u have lube on the bearings, that helps.
