I can understand why forum members might be reluctant to buy a secondhand Macan from me.
Actually it wasn't as bad as it might have been and it all went back without parts left over.
As Nick suggested the the shutters are open at operating temps- not difficult as we've had a few 38 degree days.
The lower radiator is the big problem as it Hoovers grasshoppers up from the road. Most of the fin damage is from pressure washing
The answer is to cable tie stainless steel gauze used on security doors (not a big call for flyscreen doors in UK) to the back of the grill and watch for overheating.
This was from a 10 km drive. I'll work on the badger bar next.