Bruce
TVWBB 2-Star Olympian
For regular cleanings, I don't remove them. But every so often (couple years) it is good to pull them out and clean them up good. Or if they are just really nasty and not burning evenly I would pull them. Sometimes, the burners have a hairline crack in them along the weld seam and you may not see that unless you pull them out and look them over closely.