Hi everyone! I do leathercraft as a hobby and I work mostly with veg tan leather. I find this forum very useful, I thank all of you posting answers here and sharing your knowledge and thoughts! I recently acquired my first walking foot leather sewing machine (a Dürkopp 239-525) in used but good condition. It has an AC clutch motor and we've set it up to run through a Yaskawa frequency converter (well...my husband did).  It came with only one feet - left toe outer foot and I was wondering wh