Sorry, but as I've have not used the Lansky in many years and never on the RSK Mk1, I really can't comment vis-a-vis their instructions, which sound very confusing to me. The edge angle is an included angle and not sure how that translates to their definition. I'd suggest using the old magic marker trick, which should set up the angle of the sharpening stone appropriately and ignoring the confusing instructions. The Blade Forums Sharpening FAQ covers this: http://www.bladeforums.com/features/faqsharp-puttingtogether.shtml