Here's my situation, my 25pdvc is starting to need several parts to the point that for what I'm going to need to stick into the stove to replace all the parts needed I'm thinking about just investing in a new stove,I was just gonna replace it with a refurb 25 pdvc but I really like the look of the evolution model which I could also get a refurb,the problem I would run into with switching to the evolution model would be the location of the exhaust, so I was wondering if I could use the flex vent right from the back of the stove out the wall to my existing tee(might have to make some minor adjustments to the existing pipe) Or is the flex pipe just for insert installations.