I still say increase your CYA some. Also, don't test CYA daily. There is no need to do so and it just wastes reagents. As a matter of fact, the only two you need to test daily are pH and chlorine. Testing TA and CH once every couple of weeks is fine unless you use Cal-hypo or if you notice your pH bouncing around. Test the CYA every week or so until you get it where you want it then probably once or twice more per summer is plenty. (Unless you are using trichlor or dichlor. In that case, you'll want to monitor it weekly but not daily.)

You need to make sure that your chlorine level stays within the range in this chart based on your CYA level. If you drop too low, you're risking an algae bloom. http://pool9.net/cl-cya/

If you use the 10mL water sample instead of the 25mL one, then you will make your chlorine testing reagents last longer. You will multiply the drop count by 0.5 instead of 0.2.