This is a cummulative issue that happens over a period of time,maybe years.i've been busy hot water cleaning the feeder assembly and will be installing a cross-over kit while i'm in there! i think i caught the gummy in time as there wasn't to much up the tube to feeder area so i might be ok of not doing the blow torch trick. i was using the post mentioned above for reference, good article.
I believe I caught mine in time too but I`m not going to do anything but pull the auger every year to check and clean the auger and tube right back up into the slide plate.