So RDG can't supply the correct spare blades to fit the holder they sell!Did that, their response was the pic of the one in the holder is the one you get when you order the holder but all the individual blades are not bevelled so I'll have to grind it in.
There's a slight taper on it just not as good as the original, I'll order from a different seller in the future as rdg is cheaper per inch but not worth the hassle grinding it in. As for the holder I'll have a closer look but you might be right it appears to only taper on one side like the holder should sit at more of an angle
That's pretty poor service!
