I discovered all rollers aren’t created equal. Some I ordered from Amazon were way too fat to allow them to roll properly. Send those ones back and order from a different supplier.

As a follow up, I ordered E from Amazon and it fits perfect. Had to pop off all the top outer covers. Works great.

My handle broke off from one side of my iRobot Rhoomba 870. The manufacturer doesn’t carry the replacement. Any suggestions as to where to get one in Canada.( Victoria BC. ) is it an easy or complicated thing to replace myself?