I am a dealer and an authorized center for Dyson, here in the USA. Dyson does not sell certain parts, instead they want to sell components. I understand that is not true in the UK. For example on DC 07 cyclone, the catch that hold the dirt bin cover locked, is not available as a part instead we have to buy the whole cyclone, also the DC25 cyclone spring that pushes down the bin cover, we must buy the whole cyclone Can any one help?