Did you just remove a few lights or did you move them farther away? I still say move them another inch away if you haven't already. Remember what I said over at GC on your leaves pointing up thread a few days ago, mine did the same. The burning started at the tips and moved down the edge. That's when I knew there was a problem and the pointing up leaves weren't normal. Still working on finding my cam for some pics for you, but my new growth isn't showing the same burning.