Hi Guys - I purchased a Harman P68 back in October and have been running it pretty much non stop since installation. Yesterday something strange happened that has me worried. I had shut the machine down for about 2 hours (because the house had gotten too warm) due to a quick outside temp increase. When I started the machine back up my wife immediately noticed a strange smell. The smell was coming from the back of the machine, not the front. The smell is difficult to describe but actually was very similar to the smell the machine gave off when we first started it out of the box (like the smell of oils and new metal getting hot for the first time), and the tech said this was normal. It could also be be described sort of like an electrical burning smell, but not quite the same. Another strange thing happened Saturday night during the massive snow storm we got. I was concerned about the power going out so I shut down the machine Saturday night at 10pm. I quickly noticed a small drip of water coming from around the pipe where it goes into the unit that vents it out of the house. I don't know if this was condensation from the temp change or water actually making its way in from outside. I went out and cleaned the pipe of snow and the problem went away. I think these are two separate issues but wanted to throw it all out there. Other than this i haven't had single issue with the machine and it has already saved me thousands in heating oil, so I don't want to have a single day where the machine is down. Appreciate any help/suggestions.' PS - I have been doing the basic cleaning every 2 weeks, just the front of the machine, not the back doors. I have never done the back and planned to do so at the end of the season. I have never checked the pipe for creosote. I have only burned about 3 tons of pellets and I'm burning stove chow exclusively which I got positive reviews on from folks on this forum and has worked just fine so far. Given the crazy weather I'm actually going on 3 weeks now without a cleaning so I am going to vacume it out today.