When was the last time your pH meter was calibrated? I ask because I've seen admins here repeatedly mention that unless electronic pH testers are calibrated "very frequently" (although I don't know exactly how often that means) that they can be quite unreliable.

My k-2006 is a year old now and seems to give reliable results (it jives with what the guys at the pool store generally test at). You could always just get a new reagent for your taylor, or even a "basic" kit from taylor or lamotte for under 10 bucks.

Also, what are your other readings for the pool? Things like high CL can affect the pH test.