I discovered that my front wheel moves on the dropouts. I have searched the web to know why? But most of answers was "replace quick release and problem gone" so I replaced the quick-release with different one. Not quite quick-release per se because it is allen bolt(you know hexagon shaped socket) but problem remain. It is quite tight right now I put some strength to tighten it up really good. So I looked at the old quick-release and saw this:
It this quite damaged in my opinion and I'm afraid that because of this my dropouts are damaged too. Could this be the case? How do I resolve this problem? What's to do when problem remain even with new quick-release? Fork is aluminium, wheel size is 29', disc brakes. I would love to provide any information that could help resolve this problem.