Free: Contests & Raffles.
For one, it appears the taper of the pipe gets smaller as it rises?? Should be the other way around or straight piped.For two, ditch the stove cap. Completely unnecessary. For three, add a length or two of pipe. It will draft twice as good and get you above the ridge. The extra height also allows the sparks time to cool before landing on the roof.For four, sometimes the pipe recesses too far into the top of the stove. If it sticks in more than an inch cut some off.Burn bone dry wood!!!
Isn't the cap at least good for keeping rain/snow out when the stove isn't in use?
Looks like your air intake on the door is wide open yet something is blocking the top 3/4. You said when you opened the door the fire burned great. Intake air flow is your issue, not the exhaust. I know a lot of stoves have a guard on the inside of the door to block Ashe and wood from coming out the intake holes, maybe yours got bent in closing of the intake even though the damper was wide open.