I've been lurking for a few months after buying a used Country Winslow PS40 (used 1 season). It was just installed and has been run around 15 hours since install. I've learned alot from this board so I thank all that participate in this! My problem is this: When starting, I see smoke (turning off lights with a flashlight) at the adapter only(between stove and vent). This occurs at the initial start and then smoke visually disappears but I can continually smell it when I go behind the stove. My room still smells like smoke 5.5 hours later though I can't see it. The CO2 detector next to it has not gone off either. The corner installation vent set up is this: Stove out to T, up 5', 90 angle, 1' to thimble in wall, 1.5'outside , 90 degree angle pointing down. Attempted fix: Hi temp silicone around all joints and aluminum tape around adapter joint and I cleaned all flu vents and removed ash.The adapter has been wrapped by me, then by the "expert". I also siliconed the combustion blower. I've had two different "experts" here and they say that it's airtight yet I still see the smoke coming out from and smell it where the tape is. Is this smoke and smell of exhaust a part of owning a pellet stove? Help!!