I've been experiencing a smoke odor around the right rear corner of the Progress. Woodstock sent me some door gasket to try, but I couldn't get that to work (door wouldn't close). Binko very kindly offered his expert assistance, which enabled me to make some progress, although I couldn't follow his directions exactly due to lack of availability of 1/4" gasket in my area. So, I've been experimenting to see if I could jury rig up something along the lines of what he did and I think I've come close. But, I'm still getting that smell. While staring at the stove during the initial phase after closing the bypass and turning down the air, I noticed smoke rising from the back of the stove (rear heat shield, right hand side). Come to find out, when I get that whoosh of flame (sudden igniting of the gases in the stove, not a back puff per se, but a whoof), a puff of smoke is coming out of either the rear vent area or the double wall pipe that goes into the rear vent. I can't tell which direction it's coming from. I'm a bit suspicious of the double wall pipe because the installers initially installed single wall pipe because they forgot to bring the double wall pipe (despite my email and voice mail reminding them) and when they re-installed the double wall, things didn't quite come together and he kinda jury rigged using a single pipe into the rear vent with the double wall slide over that but not quite making it to the rear vent. So, I'm leaning in the direction of that being the problem, but I have a few questions. Do any other Progress users experience visible smoke coming out the rear vent area when they have a whoosh? How could I test this out further? I'm planning on letting the fire go out, as I don't trust things if I'm seeing visible smoke (only a puff), so how do I investigate further after its out? My plan is to contact WS to get their opinion on things in the morning, but I've got a call into the installers and my thought right now is to make them come and install the #$$ double wall right. If it means that they have to re-do the ss chimney (and I think it may, because I don't think it is long enough by a smidge), then I think they should do that. Am I being unreasonable? Am I overreacting? Any suggestions would be appreciated. Thanks.