From my limited experience I would say don't be afraid to make large adjustments up and/or down from level. A small change of say 1/16 of an inch at the rear of the arm will net almost no adjustment at the stylus. What sounds good to you might be beyond a "small" adjustment, such as moving the rear of the arm 1/4 inch (maybe more). I made the mistake in my system of too small of adjustments for a long time till I moved the arm a large amount and then found what I liked, for now.
Good luck,
Mike
Good luck,
Mike