Get the right brush roll
My PN-1 had a PN-2 brush roll in it before I replaced it with a proper PN-1 brush roll last spring. If I recall correctly, the PN-2 brush roll was ever so slightly longer and thus fit more snugly in the PN-1 and has no side-to-side play. The PN-1 brush roll has a bit of side-to-side play in it but performs a helluva lot better.
Go ahead and get the right brush roll. You and your power nozzle will be happier in the long run. Besides, they aren't terribly expensive--and a whole lot less expensive than replacing the motor. Here's one on eBay for $16.99 with free shipping:
[URL unfurl="true"]http://www.ebay.com/itm/New-Electrolux-Canister-Brushroll-Roller-Brush-for-PN1-/301866065242?hash=item46489e9d5a:g:8nkAAOxyk99R4DpR[/URL]
