So I just installed my stove ( hampton gci60 pellet insert ). My exhaust point straight up and I just ran a flex liner all the way to the top of chimney with a top plate. So this got me thinking, since there is no clean out tee and its just a straight shot up, wouldn't all the fly ash and such just come straight down I to the exhaust housing. How would one clean that? Or is it a problem? Also how often do you guys clean your pellet liner? I'm assuming I would just detach liner from appliance adapter and brush from the top or bottom. How durable are these stainless flex liners, do they hold up well to cleanings? Even though I just finished install and haven't even fired it up, I just wanted to be prepared. Thanks guys