I drove 45 minutes to the LQS I like to get it, they showed me how to put it on my machine and it worked for about 15 stitches there. I tried it at home, and it was on the correct way and then the arm fell off. I called the shop again, but "you took it out of the shop, not our problem"
So I called other places to see if I had the right one, and I did, actually got the most help out of Joanns. Took the machine and the foot there, and it completely fell apart.
The feed dogs were up, I did everything right, but it didn't work. I'll never buy another one. Total waste. I'm better off with my hands on each side of the fabric. Been doing it that way for years.