Removing the loadspace cover on a tourer???

[Womble]

Hi All,

I don't know if Mk2 are the same, but on my Mk1 tourer, there is a button at either end of the loadspace cover that you press down when you want to remove the cover.

One side is fine, but the other side stays pressed down (but with the loadspace cover still locked in place) the whole time, which means I can't remove the loadspace cover, which is a complete pain if I need to fit something like a fridge into the back of the car.

Does anyone know how to get the button working? I don't think this is a problem with the cover, so much as with the car, because I had the same problem both with the original cover and with the current one (which includes the dog net). The garage sorted it the first time when I had a service done, but I don't fancy paying their minimum labour rates for something so seemingly simple again!