6d. Cover story five backed (4) L?I?
7d. Substitute pearl fixed fixed with glue (11) M?P???E?E?T (unless I've made mistake)
13a. A plant a girl turned around is pruned (5) ?I?A? (is it LILAC and why)
14a. Loud tune moderately good (4) ???R
15a. A model with intelligence, and one who lacks it (4) T?I?