<<<The difference between winter and spring/ autumn and winter usually is very distinct up here and moisture is quite constant throughout the year. I have noticed that I have to adjust the phasing when temp. is going above zero and (in fall) it´s been below zero. Sometimes spring is late, sometimes earlier but the difference in phasing always is there.>>>Perhaps you have a temperature sensitive component in the phasing system? That would explain the change.
_________________ Topband Reflector
