joetroba

I am looking for some help learning how to ease a seem when sewing leather on a 1341. Specifically, a welted seam, where I have a stack of 4 ounce leather, 4 ounce 3/16" welt and 4 ounce leather. Each of the 4 ounce pieces have a curve but the seam lengths could be different, but I need start with pieces even and end with pieces even. I have done this with pieces that are the same length but having trouble with the ones that are not the same length. Thanks