(38a) A first for Boss. (5) I?A??.
(68a) Sherwood boasted a good one. (6) A?C??R.
(77a) This is the limit for a cycling team? (3) ??Y.
(105a) You'll get a behind in international rules. (4) W??E.
Thanks for the answers Toorak, aelmpvw, fiction-factory, klazomaniac and vinpaul.
Happy New Year and good luck to all the Crossword addicts who have helped me in the past.