Gas Range, weird flame, gas smell with Video

Hi everyone, I am having a problem with my Kitchenaid propane range. The triple Tier burner has a weird flame that gets worse especially on high with a gas smell. All other burners have no issues, the stove was converted to propane. I have cleaned the burners and the orifice for that burner is tight. Check out the video link to get a better idea of what’s happening.

https://www.dropbox.com/s/youlhi7bq7gu88n/2015-01-18%2015.18.45.mp4?dl=0

Thanks in advanced!!

Any ideas?