my henderson manual garage door is stuck in the open position?

I cannot pull it down the rollers are in the runners but it will not close how do I rectify
Bob C, July 2012
Sounds as if a spring has broken. You can buy them and replace them yourself or get a specialist firm in to do it for you.

Springs are just over £60 a pair (+P&P), see

http://www.garage-door-spares.co.uk/henderson-springs.htm

ChicksFan, July 2012
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