My walking foot is chirping like a canary! It isn't even a year old yet! I bought it at my LQS last March when I started quilting. The shop is about 35 minutes away or I would take it there and have them check it out. It is a Bernina walking foot. There really wasn't an instruction booklet so I thought I'd ask the experts - all of you. Does it need oiling? If so, where do you put the oil! Thanks for your help