I just had a Harman P61A installed late last week and have noticed a smoke smell whenever the stove ignites (when in Stove Temp mode and when it first ignites in Room Temp mode). I'm guessing there's a leak in the venting somewhere and so plan on sealing all the seams with high temp silicone. I have two questions for other Harman owners. First, how many of you have done the same given it's a pain to take apart once the venting is sealed? Second, are you able to clean the exhaust area and solid pipe all the way to where the venting attaches to the unit fairly easy with a vacuum (taking caution to avoid the ESP sensor of course) thereby negating the need to take the venting apart in order to get to this area of the stove? My dealer told me that he never seals the venting precisely because it's a pain to then take apart should you ever need to in the future. Despite that the owners manual is adamant that the venting be sealed. Thanks for any info. you can provide.