Just use compressed air to blow UP from the burner up. That will remove any debris. Otherwise, you will have to pull the refer to remove the Baffle. You could remove the top roof vent cover, but that entails MORE work than is needed. Much easier to pull the refer. Besides, if you pull the refer top cover, then that exposes YOU to liability if there becomes a roof leak. The Roof people will state you caused any possible roof leak. While you can access the Baffle wire from the top roof vent, believe me, it is easier to pull the refer. Doug