25 across Australian native returning in the role of oil producer R???A
27 ac. Turkish chief about to yield to king in a lot of paying stuff?:M???T?R
22 down Raised floor decoration that needs a special viewer E-???? and
24 across on the evidence of affluent travelers judge struck back T?S?E
25a Roosa - 'roo' + 'as' (in the role of, returning)
27a Mukhtar - use 'k(ing)' for 'c(irca)' (about, in) 'much tar' (tar, used to pay [caulk] a boat)
22d E-book - (raised) 'KO' (floor) + 'OBE' (decoration)