If its a gas block leak, they usually go away after some rounds. The carbon will seal it up. If yours continues to streak and not seal, you may have to swap gas blocks. Try changing one thing at a time, so you aren't chasing fixes. All of the suggestions are good, hopefully only one thing is wrong and not all of them!
For photos, host them to photobucket or similar, then put the img link in the post. Magically the photo will be there when you post it.