Bit late I know but..
17a Unruly f-w-e-s [I think the f is wrong]Perhaps lawless?
19a Sour fruit c-a-//a-a-e [the first a on second word may be wrong too.
23a God of the underworld p-u-o? Surely not Pluto??
4d Filming of slow changes - I've got 'Time Frame Photography, but I think 'Frame' is wrong. Any ideas?[the f is the first letter of 17a above]
Ok - pile in folks - all donations gratefully received!