I made some changes to improve AC Cooling.
1) Home made Cabin AC Filter for better Air Throw, the original was choked and even after cleaning it was not giving the required output (Used Aluminum Gauss for making this filter)
2) Closed the Heater (Used a thick AC Aluminum pipe bent it into U Shape, so that water can still revolve and took all the water out from the Heating Coil and plugged the holes)
After doing above two steps My AC Cooling is 50% improved. Below find the pics of AC Filter.