Gas leak (and flames) around burner intake
It looks like the burner tube is not sliding back far enough onto the gas outlet on the control valve. Then some gas leaks there instead of going into the burner. All the gas should go into the burner tube. The gas will aspirate air into the the tube, mix with the air and give blue flames at the little holes. If there is orange flame, the adjusting collar on the tube needs to be rotated. Your problem should be a simple fix of sliding the burner tube tight against the valve. It is a pretty forgiving system: I have a 20 year old grill that is on about the 5th set of burners, not made for the specific grill and have not had a problem. (I use the grill a lot). At the end of season I buy whatever burners are on sale, they have all worked so far.