Stolen base success rates

I typically set my manager option to "conservative" for stolen bases and then set individual players settings to "steal more" for those who are serious threats on the basepaths. This has usually given me a success rate between 75% and 80% for the season. Is there anyone who can tell me how much of a drop I should expect in my success rate, if I was to change the team stolen base option from "conservative" to "normal?" I am trying to ascertain whether the increased risk is reasonable since I am currently playing in RFK and would like to manufacture a few more runs.