hi guys ,recieved a pair of bookshelf speakers with 16cm morel bass/mid bass drivers and the manufacterer says the will take 40-60 hours of driving to make them pliant and run in but they were so loose when out of the box , have the same make and range for fronts and center and they are still stiff in the rubber surround and the center is 5 years old and fronts 2 years old...makes me think they are not new . i hope you guys can understand what im saying.are rubber roll surrounds stiff when new? appreciate your thoughts :cheers: