Although this problem has affected only a batch of machines, be aware if you are thinking of buying any Vax Dual Power carpet washer. Vax tell me that current models should be OK and the replacement I received does have an additional metal pin fitted on the offending part. Also if you are watching from the U.S. this model is almost identical to the Hoover Dual Power and Hoover Power Path cleaners. I will be uploading a full demonstration video soon showing how the cleaner performs on carpets and using the supplied stretch hose for stair and upholstery cleaning. Thanks to Vax customer service for sorting this matter out quickly.