Teachers in Sainik Schools are also facing wrong fixation

I am PGT in Sainik School Tilaiya. Please help be to calcualte my salary as per approved 6th CPC. The details is as under:-
Pay Scale - 6500-200-10500
Basic as on
1.1.2006 - Rs 6900.00
Pre revised upgraded pay scale - 7500-12000
Availing Govt quarters
City - Ordinary
Pls help me in fixing my basic as on 1.1.06
thanks,M Pathak
Sainik School Tilaiya, Jharkhand