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Three I cannot do (rest done):
33dn,'Owner upset after vehicle becomes worn-out',(8),-A-E-O--;
45dn,'Red port to get first prize - that's good'(4-4),-E-T -I-G;
48ac,'Top guide called to lead queen',(6),R---E-.
All suggestions gratefully received.

33dn,'Owner upset after vehicle becomes worn-out',(8),CAREWORN
45dn,'Red port to get first prize - that's good'(4-4)LEFT WING
48ac,'Top guide called to lead queen',(6),RANGER

As quick as that! 'Careworn' came as a thought but seemed unlikely in view of 'worn' in the clue.

Many thanks.

It is an anagram of car and owner.