F7 key not working

[mazda]

Dear all

I've noticed that the F7 key sometimes fails to bring up the stock numbers, which makes it difficult to follow instructions in scenarios. I've discovered that if I go to the main menu and bring up the key mapping, select the apporpriate line and then click F7 the line starts flashing. When I select Back and then Save the scenario the stock number usually magically appear again using F7. Has anyone else had this problem? Better still, has anyone got a solution?

Aplogies if this has been raised before but search requires words of at least 3 letters which makes it difficult to search for F7!

Cheers

Mazda