Glad to hear you are going to get the walking foot that " belongs" to your machine. I have several different brands of machines and would never think of juggling the feet....anyway, when you get the right foot, loosen your top tension lower than default. On my Viking default is 6 when I put on the WF I lower it to 4, as instructed on the pamphlet that came with the foot......I do the same on other two machines if I use their WF.