The Yard edges are hand ground by eye and do vary.. From the factory they are VERY obtuse and course. Unless you just want to beat concrete to death you'll need to reprofile them. The positive is sr77 responds well to abrasion so even a Lansky kit can do the reprofile and give you a nice sharp (strong) edge.

The marker trick is the best advice I ever picked up on a forum..

JYD #3 Poor, but still dreaming of a sage and black SOD CG...