Second attempt at using my new cylinder Dyson. Am new to cylinders so I might be doing it all wrong, but I can hardly push the carpet tool (with brush bar) along at all unless I've pulled the reduce suction lever. Is this normal? Do I therefore need to vacuum the whole house while clinging on to the reduce suction lever? DH convinced me to try a cylinder but I fear I've made a very expensive mistake. Have used it twice so can't return it now. Any experience gratefully recieved...