If it is lapped flat you can “make” the stone act finer by polishing and burnishing the face. The grit in an Arkansas doesn’t release like a jnat or water stone. It is much more akin to a diamond plate. As the plate gets used the tops of the diamonds get flattened and rounded which makes the stone cut less quickly as well as leaves much shallower stria in the steel. So if your edges are comfortable enough or keen enough try rubbing some bar on steel knife or chisel or plane blade on it for a bit then run a razor on it and test shave it.

My ark’s are polished to about 2k then burnished until I started to get my edge where I like it. The versatility of these stones is immense. The other rabbit hole with them is lubricants. There are tons of threads on them around here.