When I get a new one like that, I normally try to do 10 no pressure X strokes with a light slurry followed by 10 no pressure X strokes with just water after an 8K and then strop and test shave. If the results are a little harsh, I then try the 10 strokes with water only and then strop and test. Sometimes depending on results, I will drop down to 5 strokes and see what happens.

Each stone like this has it's own personality and playing around with it will give you an idea of how it reacts.

Have fun.