I'm laying up our Savannah whilst we do our house move ( Going to sunny Llandudno). I have opened the taps to the Fresh water tank plus the drain valve under the bed at the side of the boiler, opened all taps and run pump several times. However I know there will still be pockets of water left in the system, do any of you clever people know of any further precautions I could take to remove them. The new storage site is very exposed and high up in the hills.