Almost done, but stuck on my last 3, none of which has been mentioned on here!
6a Skilful operation - no blokes's work! (6)
I have O?U???
3d Outing a dopey thing to do (4)
???P
28a Reduced commercial trade in trouble - Vladimir's first to butt in (6)
?D?E?T
Looks like it must be advert or advent (because of the V) but neither seems to mean reduced, and I can't fully parse either of them.
I also can't parse 17d (though I have the answer from the crossers, I think!)
Take steps to overturn state cut-back (5)