I have the bags now, item # 71-85681 which can be substituted for # 806008, and am working on the elbow (3 elbows currently on order). The next item I will try is the snout since mine is about to fall apart, but it is a bit more complex. Those two parts will be made with some sort of sheetmetal. The only bad thing -- prices are somewhat high since the volume is very low.
I would really rather just be able to buy the silly parts from Sears, though. And since there was a request for a location where the parts could be found< I don't suppose I'm spamming the forums with advertising (the reason I am here now -- searching for clues where to find a snout assembly).