JAIPUR: India U-17 World Cup coach Nicolai Adam wants to work on defending aerial balls and finishing ahead of his side's first major challenge in the Asian U-16 finals in Goa later this year."Defending of aerial balls is one area that concerns us a lot. That's an area where we are working hard upon. We also need to improve on our finishing," the German tactician told TOI in a chat from South Africa where the team is currently based on their exposure trip.India play the AFC U-16 Championship starting September 15-October 2, in what would be the biggest rehearsal ahead of the World Cup next year.What, though, stands in between Adam and his plans to unearth more talent fitting the bill is the ever-impending problem of age-cheating.If a top All India Football Federation ( AIFF ) official is to be trusted, six of the eight North East XI players, scouted to broadbase the U-17 World Cup pool on the basis of an exhibition match against the current World Cup squad, admitted to being on the wrong side of the age cap."One of the players' birth certificate was issued 11 months before he was actually born!" revealed the official.The match, which finished 1-1, was organised on January 29 by I-League outfit Shillong Lajong with the support of all the state associations of the Northeast including Sikkim.Asked whether it's a matter of grave concern that the hotbed of talent is far from being immune to the threat of age-fudging, Adam was forthright in his answer."You hit the nail on the head when you speak of age fraud. If you want to abolish it, I feel we need to have a digital registration system where every new-born baby will be registered in the system," said the 39-year old former Azerbaijan youth coach.Adam though, did not want to dwell on the visa issue which delayed his 23-member squad's departure to South Africa by five days."Our practice sessions weren't affected at all. We used the time to train at the Ambedkar Stadium here in Delhi," the coach said.Meanwhile the boys, scouted from among the opponents in the four exhibition matches this World Cup team has played so far, will join the AIFF World Cup academy's 'B' team stationed in Goa.The U-17 side thrashed WIFA XI 8-0 to start the exhibition calendar this year, following it up with a hard-earned 2-1 win over IFA XI in Kolkata.The boys were 'two' good against SAI XI in the capital with Northeast's 1-1 stalemate in between being the only time they failed to triumph.