AHA = American Homebrewers Association
BYO = Brew Your Own (a popular home brewing magazine)
As far as your crush is concerned, as long as you did not get a stuck sparge or if you want to increase your run off rate then you don't need to change anything. Unless you are seeing lots of shredded and cut hulls, or a lot of barley flour in your grist, I would not worry too much about it.
A finder crush will generally lead to slightly lower grain absorption rate, but the lower the grain absorption rate means the less sugars you are leaving behind in the mash tun. There really is no 'correct' grain absorption number to target as it will vary from system to system and depends upon a number of factors related to mash liquor temperature, mean grain particle size, size distribution, amount of intact the hulls, grain bed depth, rate of drainage, amount of grain bed compaction, etc.