Very grateful for any help with these three clues please.
25dn: "Grandma's tips on jam: no additives; sterilise jars (5)." I have M---S.
29ac: "Abnormal perception not a thing exploited or embraced (8)." I have -S-----D.
30dn: "Rent for which eg nine pounds raised more than enough (7)." I have --E-I-G.