What type of alan key does a fiat punto need? I have a whole range of sizes and none of them seem to work. Is there a specific tool required instead? All the screws or whatever holding in the panels such as the see through plastic protector from the gauges wont loosen up with the alan keys ive used.

Ive taken the "see through plastic protector from the gauges" off aswell. I just used one from a allen key set which i bought...........cant remember the size though, might have been bout 4-5mm

3mm for the small screws, 4mm for the big screws. thats pretty much it for allen head screws on puntos.