I just swapped out my damaged ceramic cat for the new steel one. When the cat is glowing during a burn, it appears that half the cat isn't glowing. The cat has a metal seam dividing it in half, and the half furthest from the door seems to glow easily, while the half closest to the door doesn't glow. Ive checked the chimney cap a few times from the ground. during a burn with one side glowing there's nothing but heat shimmy raising from the chimney (no smoke). Seems to be reburning and keeping things clean but wanted to see if this is normal. Anyone else noticed this? Wondering if I should call Woodstock and ask to swap it out?