Some help will be appreciated for the following, thank you:
8d Living again on old centimes, short of money(bust)(11, hyphened)-
R???????I??
10d Unexpected extra piping?( 14, 4 words) - I???????E?????
20d Menial astride knight's mount(4) - E??A
21 Sage loses heart early(4) - S??C
27 Mother Superior somewhere in Southwark?(7) - ?M?????