They have pathetic performance from new.
Bin it & buy a Sebo. http://www.sebo.co.uk/Pages/uprights.html
Even better a commercial grade Sebo
http://www.sebo.co.uk/Pages/bs4636.html
The commercial machine will outlast you.
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Dave - The Medway Handyman
www.medwayhandyman.co.uk
Good advice, our Sebo has been brilliant.
David - Milton Keynes