You absolutely need to put something under the rulers to help with grip. Otherwise it's a slippery proposition.

I like Amy's first class the best. The second one was OK but for me there wasn't enough new information.

JeanieG I had the same problem with the Westlee foot. If I lower it enough to to stop breakage I can,t get it to sew over any seams. I noticed that a lot of long arm ruler foots seem to hop slightly and the original brother foot hops slightly and works better. If you go to All Brands you can get a Juki ruler foot that has a spring on it so it hops slightly. It also has a thumb screw so you can adjust the hop. It works much much better than the non hopping westlee foot and you can hop over most seams. I still get some skipped stitches and thread breakage more than I do with th original foot but much better than others and I just got it so if I work on the adjustments a bit I think I can get it to work well. If you can't find it pm me and I can give you the part#

I read somewhere that each machine has one direction it doesn't like so much. For mine it is a straight FMQ backwards. That is not a good path with many broken threads and many bad words. So I try to avoid that road. Yours might be left-to-right challenged, JeanieG.