Yes,I have read that(upgradation of the Ajeya's).So,the T-90's with us also have the problems that were on the T-72's!!
I completely agree with your views and IMO that Arjun has given a lease of life to the IA's technicians as the German/Indian engines are far more refined and maintainence friendly compared to the old Russian ones!
@point3-So,the strike corps of the IA will be forced to retreat if either Pak or China acquire and field portable ATGM's with top attack capabilities ala the Javelin!So both the Pakistan army planners and PLA planners will/can destroy the offensive capabilities of the IA mechanized infantry if they have sufficient numbers of ATGM's with their SF personnel!Why is then there a hesitation to induct and field Arjuns in the strike corps package as they are immune to these real threats?!