Last spring I installed an Autopilot with the chemistry control... wow, talk about making things easy. I love it. I just opened things up again this year to find the display reading a pH of 9.5, my pool supply store (machine read strips) telling me that my pH was low at 6.4, and my test kit telling me that it was 7.6. I'm going to assume that the test kit is the one to believe. I am wondering if it is normal for the AutoPilot to be so far out of calibration. I didnt expect it to be so far off. Last season, it came out of the box showing the same number my drops were telling me. What happened while it was sitting in the basement for the past 6 months? Should I be looking for a problem somewhere else?