Advance2 smoke in hopper

Second season using my Advance2 and two months into it I am getting smoke in the hopper. No issues last year and same pennington Natures Heat pellets. When it's 3/4 to full of pellets it is hard to see but when the lid id open it smells like smoke. 1/2 full to next to empty it is so bad that smoke detectors go off when the lid is open for more than 30 seconds. Dealer had me clean it again and try different pellets, did it with same results. flue goes 2 feet then outside building to a tee then 6 feet up with a jet cap, all cleaned to a mirror right to the stoves' comb. blower. Hopper is sealed at all fold joints and I siliconed where it sits on the feed box. I notice the slide plate has cresote on the front edge where it never did before.
Well the dealers tech is on vacation so I called Harmon and they said it needs a new feeder weldment box with a modification the dealer will do to the box. He would not tell me the apparently top secret "mod" the dealer will do. Called the dealer and he is ordering the feeder weldment box.
Anyone have this happen?
Thanks

I also understand that the burn pot with the 5 holes (which I have) near the base is a cause of the auger tube to crack. Fire in the tube and on the auger tip overheats the tube. This is also a cause of heavy clinkers at the base of the burn pot by the auger tube and on the auger tip. I wonder if this "kit" includes the new burn pot without the 5 holes.
These are not my pics but show the different burn pots

Thanks for the info. I hope my dealer knows this or at least read the instructions before making the trip without all the parts. I also understand that two gaskets and silicone is needed as the hopper has to be removed.

It's the pics. The pot are the same but for the 5 holes at the bottom. Seems like Hamon saw the error or "defect" in design of the Advance and now not only have a Advance2 but also a new model advance with new manual, hopper switch, direct drive auger, feeder weldment,feeder air intake to name a few and did away with the hopper muffler which I could not find on mine.
Also the warrenty I have: 6/3 years gold
"Harman Home Heating warrants its products to be free from defects in material or workmanship, in normal use and service, for a period of 6 years from the date of sales invoice and for mechanical and electrical failures, in normal use and service, for a period of 3 years from the date of sales invoice."
Is now convoluted depending on the failure.
New Advance manual

rickwa said:

i got your message. the burn pot replacement is in the video. if your dealer watches the video that comes with the feeder he wont be able to miss it. dont let him leave your old burn pot in. if he has any doubt he needs to call harman and tell them, and they will send him a burnpot for your stove.

Click to expand...

Thank you.