My Jandy 2440 is not stopping in the correct position when going from Spa mode to pool mode. It is not stopping at all, basically just making complete cycles. When I remove the handle and cover from the 2440 and cycle between SPA and pool it works fine. As soon as I re-install the cover and handle the issue starts again. The actuator is about 11 years old, should I replace the switch, or the entire unit? I assume the Jandy 2444 is a drop in replacement for the 2440.