Need to raise top box by 3 inches
 

Because I have moved the side panniers back towards the end of the bike.

The knock on effect is that I need to raise my givi mount by 2-3 inches. I've mounted a cash box onto the givi mount and the bike, but the lock is pretty rubbish (really insecure) and the weak lid hinges are a point where I can see potential trouble.

So apart from welding the lid shut to the cash box, does anyone have an alternate suggestion as to how I might raise the top box?

Cheers,

Brian