I have an Englander 25 pdv, and I have the AOK kit installed, but the flex aluminum duck is to short and ripped. I have my stove installed in the basement of a raised ranch, and need more then the 6 foot provided. Anyone know where I can get this? Lowes and everyone seems to sell the 3", but this seems to be a 2" diameter duct. Any ideas? I just got done cleaning out the stove, taking the combustion blower, and room air blower off to clean and replace gaskets, and the duct that I had with the kit ripped when I tried to re-clamp it to the stove. Its just not long enough. Any help would be appreciated.