Gosh, I was in the midst of doing meandering on the border of a quilt for our little grandson, when my BSR foot started skipping about 5 stitches OFTEN!!! I tried everything--rethread, new bobbin, oil machine, new needle, checked tensions--no luck!! Then I GOOGLED the problem and found out that in 2010, Bernina found out it had a problem with the spring in the original BSR feet. They made a fix--new stronger spring. I never got that memo!!!! So, I took my BSR to our wonderful repair guy and he replaced the spring while I shopped--no charge!! It works perfectly now!!! But, dang--I had to go back over lots of skipped stitch areas--tacky, tacky, tacky!! I don't think our little grandson will notice those areas, but I sure do!!!