Hi,
Page 13, it says to use two #8 'lock washers' but not a round or star style (both are included, both would fit, and the quantity provided, 4 and 6, does not make it obvious). I could see how it would be easy to use the wrong ones at this step. Later on in the manual (page 16) it DOES specify star lock washers for the transformer. As such, I can conclude Page 13 is asking for round not star (and you can sorta see it on the image).
Just wanted to mention this, not complaining. Or maybe I am dumb and should just know!
Thanks, having fun starting this!