20d) Misrepresent extreme left-wingers I'd upset (7) D?????T
23d) Suspect can't apparently have forty winks (6) ?A???P
24a) Boilermen's leader has organised strike (4) B???
27a) Outcome of wear and tear or noise possibly (7) E???I??
Is 21 across DOCKYARD or DOCKHAND (Clue: Detail win in E14?
All help greatly appreiated