Hi guys i recently bought a 2010 klr with 31 000 km in it. It's got almost new kenda trackmaster (knobbies) and i noticed that when i go at highway speeds 90km and up it shakes, it's sometimes scary, specially when i hit cracks in the pavement. I checked the air in the tires and check the bolts on the fork and it still doing it. Could it be the tires? I ordered a superbrace (waiting for it) what else should i check ?