any system left stagnant for a long time will quickly fail
If you don't use it - you lose it!
When I got my 63SR the semi-retired owner of the local Ford dealership came by to check it out. He was selling these cars new and said back in the day they always encouraged convertible owners to cycle the top at least 2 cycles every two weeks. Of course this never happened in the winter time, and he said they usually had several tops that were inoperable in the Spring. Mine had been stored for 27 years and worked the first time!! The party was soon over as things started to fail in weeks to come but all my issues were solved by studying the manuals.