You are right --- you don't want too much CYA because it is hard to remove if you have too much. How long has it been since you added the stabilizer (CYA)?

By the way, instead of making three posts within minutes of each other, you can just click on the edit button in the lower right of the post and then just add whatever you need to.

Good levels:
pH -- 7.2-7.8 but usually 7.4-7.6 is what I prefer
TA (alk) -- 80-120
CYA 35-50 (but different climates may have different needs here)
Chlorine --- depends on what your CYA level is. See the "Best Guess Table" link in my signature below.