Hi a D10 will be the later set up.
Do you know how to adjust a threadless headset?
If not.
Loosen the two bolts on the stem clamp slightly, then tighten the headset bolt. Tighten it as little as you can until you have no play in the forks. retighen the stem clamp bolts.
Its possible you have damaged the headset bolt surround and its no longer holding in properly. Its only light metal thats designed to flex. I had to change mine a couple of times on bikes .....after over tightening them?
Last edited by bhkyte; 05-10-16 at 04:07 AM.