Spoiled Boy of Sport - Says Moscow -- Russia's Olympic champion sculler, 24 years old Juri Tukalov, was dubbed today "the spoiled boy of Russian sport." Handsome Tukalov, who was beaten by the Yugoslav at this year's Henley Regatta, was bluntly told by Soviet Sport, the leading Russian Sports newspaper, that he has let conceit ruin his performance. Soviet Sport says "In 1952 he won several international matches and then went to Helsinki to win a brilliant, almost fairy-tale victory over world-fa