These responses show how different owner, users, and shops can have very different advice to give. My most local dealer said he's sold "tons" of 441s and has, so far, had zero come back. He claims that he's had nothing but satsifaction from those who bought them. I guess that isn't a report on how he likes or does not like to work on them, since he hasn't according to what he told me.
Mine is only 8 months old, and to tell the truth I haven't got significant time on it, maybe a couple cords of wood. It is the nicest running saw I've had, and I'd buy another one in a heartbeat. My experience has been that it is everything advertised. I have seen no problem with the air filter cover clips.