I have had my Taylor test kit for 3 years now and the bottom of the cya side of the comparator is slightly cloudy limiting the view of the black dot and I am wondering if that will throw off my cya test results. I figure since the clouding of the dot starts before you put in the water it will give me a high CYA as I will loose sight of the dot quicker than I should. Is there a way to get that clean or should I just buy a new one?