there are normally bump stops under the bonnet that you can screw in or out this will help with the alignment of the bonnet,i am sure its nothing serious or
Lexus cambridge wouldn't be selling it,the sales person will lose their commission if you pull out of the purchase so again they should do everything
to help you.just remember its your money you're spending so make sure you get what your paying for ,and dont sign for it until your happy.
i had somethink similar, after kath had been driving for a year i bought her a toyota aygo 09 plate and wasn't happy with the tyres on the rear as they had
been on the front and where badly worn on the outside edges the garage said they would change them ,but on collection they hadn't as the garage owners said he
would have them on his car ,so i told him he can have them on his car i dont want the aygo anymore ,his attitude changed and we had 2 new rears the next day.