quick tip on the rubber rings problem .... treat it like a tortoise and insulate well when putting away over the winter, seriously.
The problem with seals blowing is that frost gets in to them and they go hard and fracture, as soon as you put it under pressure at the first bit of Easter sunshine they pop. Doesn't happen every time, or with every brand, but that is the main problem. So put them in a box, wrap them up and leave some lettuce in the shed for it.
