It took me about two hours. It's slow at first but as you get going it gets quicker, at least it did for me. You definitely want to remove the wheel and I found the easiest way to stitch was with the wheel upright between some boxes on a table so I could sit and stitch at a comfortable height, rolling the wheel as I went. Be sure to use the double sided tape they provide and take your time in centering the leather. A bit of a project but well worth it.
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Sabre 38-2 #164