The kit you are referring to is to prevent smoke from exiting back into the auger? Who is Mike and how can he be reached?

Just "tuned in" to this site and I switched to 100% wood pellets because of the price of corn. What a story! This is for my 6 year old A-Maize-ing boiler. I have a 6 ton silo in my side yard that feeds into my hopper in the basement. First of all, I couldn't buy bulk pellets, only in bags so I loaded 200 bags (5 ton) of pellets up the grain auger into my silo. WHEW! Great exercise!
Next, things were working okay for a few days until the hopper auger jammed! I cleaned it out and tried to decrease the amount of pellets entering the auger by closing the trap half way, thinking that the auger was overwhelmed. No good! The pellets became jammed at the trap door! I then build a collar to go under the trap door to limit the amount of pellets entering the auger. Still jammed!
Now what! I started cleaning the pellets as they came out of the auger from outside with a screed. The pellets were chewed up by the grain auger as they entered the silo creating dust. Tried that. No luck. Then I remembered the bottle of graphite that came with the boiler 6 YEARS AGO! Dumped a bunch in the bottom of the hopper and the squeaking stopped and the whole thing started to work wonderfully! Now I just squirt some graphite near the hole of the hopper each time I refill the hopper with pellets.
So to answer your question, have I had success? Well, yeah. But I sure hope the price of corn keeps coming down!