Right now we get a slight smoke smell in the house when we have the stove burning at low (have a Harman P38 just installed) we do not get the smell when burning at higher feed rates. The set up is 6" then T clean out, then 14' of pipe (all 3"). I use RTV sealant on the pipe section that connects to the stove. I also do not have the OAK installed. The fire seems to burn just fine (flame is not lazy). Does anyone have a possible idea why we could be getting smoke at a low setting but not at a high setting?