A friend of mine came over to sew and she said that her machine was not running as nicely as it normally does... I asked her when was the last time she cleaned it... well, never she said... so I pulled out my vacuum attachments and handed them to her. She was about floored when she opened up her machine. It was solid! I think she has added cleaning and oiling to her routine now lol. It was way worse than yours to say the least... but yeah, doesn't take much to get a ton of lint in there!!