Success! @bholler said (sometime ago) that it can be done. With enough force i managed to push the head of the sooteater through the Encore bypass. It worked very well there after. Chimney swept, cat brushed, stove cleaned. I wish this was it for the season but it will cool down to low 40s by Tue.Couple of days of high 50s coming up. I will attempt to clean the chimney bottom up with the sooteater today! Wish me luck.....could not pass the sooteater head through the Encore bypass door.