I've had my Sunbeam EM7000 for over 3 years with no problems, and never any leaking from the group head. Yesterday however the group head started to unlock itself when pulling a shot. There is no problem when just running water through it, but when the basket is full of coffee, the group head will quickly unlock itself and fall out. I can just manage to hold it in manually, but only just. The only thing I can think that is different is that I recently wiped the seal in the collar to get the grounds out. I can't see anything obviously wrong with how the group head fits into the collar - it all seems normal.
Any ideas? Does the seal just need replacing? It just seems funny it suddenly went from perfect to falling out - there wasn't any gradual deterioration.
Any ideas? Does the seal just need replacing? It just seems funny it suddenly went from perfect to falling out - there wasn't any gradual deterioration.

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