I am so proud of myself. I watched a You Tube video showing how to clean a Bernina, and I actually did it myself. My husband was totally impressed when I told him. Where I live in Indiana, I am 1.5 hours from a Bernina dealer, so I decided to try. When I removed the throat plate I almost fainted. No wonder my maching was clunking...it was full of dust "clumps". I brushed them away, applied the oil, and put the whole thing back together. Now my machine sews beautifully and is totally quiet. Today I'm giving myself $50 for a job well done!!