Help again.
19 across >> what a billiard player aims for >>6&4.>> ?????T ?A?L.
20 down >> polished with abrasive material >>6 letters >> ?A?D?D
13 down>> musical symbol >> 6 & 4.> ?H???E ?L?F
5 down >> covered in printers liquid >> 3-7>> I?K-?T?A???
Many thanks again.