I have a Quadra-Fire Classic Bay 1200 insert pellet stove purchased in 2010. I am having problems that it won't stay running. I have checked the vacuum hose and it is clogged. I can't get a wire through it so I need to get it completely off, and also make sure the stove end connection is cleared. I can't see where the stove end connection is for the vacuum hose. Can anyone tell me exactly where the vacuum hose connects to the stove and the best way to get to it? In looking at the back of the stove the hose heads toward where the pellet auger and chute area but there is a back cover on the stove that the hose goes past and blocks me from seeing where the hose goes. The back seems to be held on by quite a few screws so I wasn't going to take it off unless that is the way to get access to the hose connection.