mystery EHA leak cured itself?

[LINDS HANSON]

After Christmas I drove my wifes 300TE and noticed the strong smell of gas, I removed the air cleaner and noticed a steady drip from the EHA unit. After doing a search most people suggested that the O rings would be a waste of time and my local dealer even suggested that a complete fuel metering unit was the only cure! at £1100 I DONT THINK SO. So when I returned to work I bit the bullit and ordered the new EHA at £103, my wife had to use the TE everyday last week and complained that the smell was getting worse every day untill Thursday then the smell had disappeared? I thought maybe she had just become accustomed to the smell, but I drove the car and the smell had gone. So on Saturday I removed the air cleaner and ran the car for 20mins with no fuel leak what so ever? so I didnt risk fitting the new part as the car runs OK. So can anyone explain how the leak can cure itself or am I going mad? Regards Linds