I bought a pair of these motors to replace two in a pool cleaner/pump control box that had the gears disassembled - probably due to age, weathering and Lack of grease on the main axis of the timer wheel. I installed both motors - and lubricated the hard axles. There are no installation problems. After 24 hours, some clocks were about an hour behind, while others were about correct. Puzzled, I exchanged them for two timers, and after another 24 hours, the other timer was about 1 hour behind. A…