I am new to hearth.com and it looks like there is a lot of information here. My question is simple. I am going to purchase a Blaze King Princess fireplace insert and wanted to know more information about the chimney. I currently have a brick fireplace and chimney, so do I need to have piping all the way from my insert to the top of my chimney, or can I run a sweep/elbow up from the insert past the smoke shelf? The brick and mortar on the interior and exterior look to be in good shape, so is this a needed expense? Any help or comments with this is appreciated. Thanks!!