I am installing the Summit this weekend, there will be plenty of pictures for you photo hounds. Received the liner today, have to make a few minor adjustments to get the adapter to work, no big deal. Do you fellers use furnace cement where the liner goes into the adapter? The adapter is actually shorter in height than the insert outlet, by about 1/2”. I will most likely cut off the flat flange that would normally sit against the insert top. Otherwise it will be 1/2” above the top surface of the of the insert. If i push it all the way down til it rests flat on top of the insert top, it again will be 1/2” short of the top edge of the insert outlet & won’t allow the liner to slide into & mount to the adapter. See photos. Its supposed to rain here Saturday, of course, again my luck LOL. But as soon as that rain ends or slows down enough, I’ll be up there installing that liner quicker than Santa can get his fat arse down the chimney.