I am still unable to find the parts. I have also gotten it checked by another Auto Transmission repair specialist Mr. Adnan of Adnan Automobiles and he also has diagnosed the same parts failure after servicing both the valves thoroughly.
Another fellow suggested that the whole auto transmission needs to be replaced.
Any technical suggestions please.
PS: @Xulfiquar: may I have your cell number in order to discuss this on phone with you (if you dont mind)