I just converted my fireplace from wood to new gas logs. The fire looks good except for a rather large flame shooting out from the front right (see embedded video). That's about where the end of the u-shaped burner is, so I'm assuming there's gas being emitted from the end of the burner, which I thought was sealed off on the end. Have you seen this before? I'm concerned because that flame shoots right toward the valve and gas line feeding the thing and even turned the valve somewhat black ( I just wiped it off). If this normal or should I be concerned about it? I'm trying to figure out the best way to resolve this. Do I need to install a new burner or can I maybe just put in a piece of sheet metal or something to block the flame?