I know this is a long shot - but does anyone have any inventory left of the old Heat n Glo DV pipe? Our fireplace - a Grand 50 - was installed 22 years ago and works fine. Due to a remodel, I have to build a chimney and extend the DV pipe, which terminates in a DVK currently. I need a 90 degree angle and a 6 foot section of DV pipe. I have called Heat n Glo and also Duravent - and they discontinued this pipe about 15 years ago. Thanks! Kin