Carbon forks

hippy Did you take the bars out of the stem, clean and refit? Also, take the stem off the fork steerer, clean and refit?
If you are rocking the bike back and forwards on the brakes, check that the brakes are not loose through the fork.
Try grabbing opp. sides of your front wheel and twisting to make sure it's not spokes.
Check forks for anything odd.
Replace.
Kinda in that order.

thanks again. it was the stem that was clamped too tight to the steer tube,. i do however have a small nick on the top of the fork which i just noticed, nothing big but should i be worried? it came from when i fell and the brake moved back to hit it.