Don't u just hate them. I thought the days of all things going badly wrong were over until today... Terrible air lock on Gardiner pump managed to unblock then started again half way through a job. Then when getting small hose off pump broken small part on it so leaks too much now. Pump wasted 6 months old. Just look ordered another Gardiner hopefully won't take long to arrive. When windows going well it's such a great job, then it turns on u so....