Norton Crystolon is dull

[garry3]

Oddly enough the old Norton crystolon stones in my 313 tri-hones are what I would consider on the muddy side. Very different from my others, it's odd and seems to be limited to that honing system.
Anyone else notice this?

 

[FortyTwoBlades]

Special thanks to FortyTwoBlades for the pressure advice! I started applying serious pressure and the stone kind of improved itself! I got 60/80 SiC grit but I am not sure if I need to lap it since the stone cuts really fast and does not feel like glass but give me a good rasping feeling.

You're very welcome! A lot of folks struggle with matching pressure to a given stone, especially when they are very used to one style vs. another. Use too much pressure on a soft stone and you'll grind it into mud in no time, but fail to use enough on hard stones and you'll glaze them.