How to ease when sewing leather on a 1341?

[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

[AlZilla]

What are you making that the three pieces wouldn't be the same length?

4 ounce leather really doesn't have any stretch that would lend itself to easing unequal lengths, at least as I understand easing from doing it with fabric.

I'm going to move this to the Leather Sewing Machine sub forum. 

[Constabulary]

not sure what you mean... Is it that your last stitch is probably to long and not hitting the 1st needle hole where the seam began? If so then you can shorten the stitch with the reverse lever and hand crank the last stitch - if you know what I mean.