Hi, I’m trying to install my new Vermont Castings Aspen C3 wood stove. It’s replacing a stove, so I’d like to use the same stove pipe and chimney system I have in place already. Problem is, is it seems the stove is not compatible with any of the selkirk dsp components. The telescoping double wall pipe doesn’t fit over the flue collar and the stove adapter is a terrible fit. With the stove adapter the outer layer of pipe had about a finger with all the way around between it and the flue collar. Additionally the crimped section inside doesn’t contact the collar and sits awkwardly on the tabs inside the collar. The holes pre drilled in the adapter also in no way line up with the holes drilled in the flue collar. I tried working the telescoping pipe section over the flue collar and there’s no way. The dealer I bought the stove from sells duravent and says it has no issue connecting to the stove. He also says duravent is overall much easier to work with and easily compatible with today’s stoves. Of course the problem is I already have the Selkirk metalbestos chimney system fully installed and have read it is not compatible with duravent. Any suggestions from installers out there?