I recently bought the DELTA 50-760 and I have put it together, but I have a quick question to anyone who has this dust collector. How did you put on the lower bag? Did you use the band clamp or did you use the felt ring? I used the felt ring but was unable to following the directions exactly. I tried rolling the bag over the ring and snapping it in like the top bag with no success, the bag would slip and some other issue would arise. I finally took the top bag off, slid the bag up from the bottom so the bag extended about 4 to 5 inches into the hole then took the felt ring and dropped it in from the top got one side in then while smoothing the bag I snapped it in place. Does anyone know the secret to this; because I also noticed it doesn't seem to want to snap out with the hugging technique. In order to remove the lower bag it seems that I need to remove the top bag first so I can reach inside and pull the ring out.