Thought I'd resurrect this one. Just been royally ripped orf. Unfortunately whilst I was off dodging raindrops on the south coast back in August one of my colleagues called a certain company in to sort out a fault that he struggled with. The engineer recommended some spare parts which we duly ordered. It has taken two months to finally get the parts (apparently that have to come from Japan!). One of the items was a microswitch which we were charged £51 for. You might expect a meaty industrial strength breaker for this price but no, I found it on RS for £1.52 AND is available for next day delivery. The other parts are a magnet and a magnet enforcer, £57 & £25 respectively. The magnet is nothing special (20mmx10mmx5mm), the enforcer is a tiny plastic wedge that is glued onto the magnet, guess what? The £57 magnet comes with the enforcer already attached. I now have a spare enforcer. To add insult to injury I've had a look at the problem and I don't think these parts were required, it looks like a latching mechanism either needs aligning or replacing. I've kept the information to a minimum to protect the guilty (for now!).