Hi,
I purchased an onza ska a few weeks ago and I recently went away, I had to take of the headset at the front so it was just the bike frame and rear wheel.
When re-assembling the front I believe I put 3 rings back around the pole to attach the headset to. Now when I move the bike there is about a 1cm movement of the handlebars forwards or backwards before the actual bike part moves. I think the word would be its "Loose" If you are looking down on to the handlebars from being on the bike the alan key screw going down just spins when I try and tighten or loosen but the two alen key screws from the side do tighten and loosen.
Please see the video:
I don't know how to embed a youtube video,
Thanks,
Alex,