2: Square dance queen with gold filling stalks dentist, perhaps, most of the way back?? (9)
3: Nobleman, with honour from the Queen, in stud hangout? (7)
4: Knot a rope in the great out-of-doors (4-3)
5: Nits are possibly more unpleasant (7)
6: Old aircraft and odd blimp on a fixed course (7)