stuck in top left so these would help please...
10a Returned saw used to cut trees short in wind (7) ?E???M?
( I have emma for 11d from b amme d ? but why mike's predecessor? i originally had lima but that doesn't fit with 13a)
16a Colours almost as if on a drop of acid (5) ???AS
Which 2 letters change? Possibly 1st letter of 29d to an F??