Ordered a new cat for my Lopi Rockport. I went with a steel cat as a replacement and ordered it from Midwest Hearth. It didn't say it was out of stock, so hopefully I'll have it by next week. I have about 3 years on my current one. I'm still getting high temps with it, but noticed I'm using more wood and draft to get them and they aren't sustained. I can tell it's performance is starting to lack. I was hoping for a longer cat life, but it is what it is. I'm burning pretty much from October to end of April.