Flames licking at door of fireplace insert

[cbscout]

Hi, I noticed an issue last night that started out of the blue this season. My Pacific Energy Alderlea T5 Classic Insert was burning pretty well all day and in the evening after I reloaded, I noticed that it seemed to continue to burn hotter than usual. Flames were licking the door and also going up the flue (which is at the front of the baffle). Is this a door gasket issue, where the seal has gone bad?

Thanks!

cbscout