Hello! I have a Royal vacuum model 887, and I'm trying to convert it to paper filter bags which to date it's never used. I've had this vac since it was new. I bought a new outer bag since the existing one is now totally disgusting, but the new one is inferior and clearly not OEM; thinner fabric and the bottom ring that attaches to the vac is flimsy metal and fits very loosely rather than snugly. Also this new bag doesn't have the inner flat, rubberized fabric tube. I can't use the A bags I bought since there is supposed to be a bottom tube on the vac itself with a spring that attaches to the paper tube. So apparently this vac was intended to be bagless...? I emptied it again and put it back on the vac. This vac looks beat up but it runs flawlessly. Thanks for any help...I'd love to make the conversion to a new outer bag that accepts paper filter bags.