I've got a Kirby Classic III bag that I need to launder in the near future, but I remember removing/replacing the bag to be quite the hassle last time I had to. The elastic is quite tough and doesn't stretch easily. Good for sealing in dirt, but not good for my arms! Is this normal? Am I missing out on some obvious tip to putting the bag back on? The thing tried to discloate my right shoulder last time and I'm not a weakling! I think I put it on crooked last time due to a slight increase in dust leakage, but I've not even bothered to try adjusting it since I got it due to the fact it's so difficult to put on! Thanks for reading and thanks for helping me with all my stupid questions, guys. 
