logic for end user is drop the Rolls Royce (big car) from surrender. The last part of the clue refers to "for customer" the end user. (I think you've put the last bit of the clue in incorrectly!)
me too, last couple
5a 6
cigarette holder husband removed in error
a---a- ashcan??
if so what is
6d 5
they're used to describe unit of heat, not hydrogen
h-r-s