Wallbanger on ice which has you flat on your back ?U?L(not sure about the L)
10 across Male Tipster's third summer in Monte Carlo (someone said Monaco)
not sure that fits the pattern is P?T?
Also 24 across He made films from a cast of 17.(Birds) As this only has four letters
?A?I I cannot see Hitchcock fitting
Also 18 across One appears to grasp current trends N?A?