Finally i have replaced my fuel tank, before this my fuel tank was under the driving seat,
Initially I replaced the bottom of my fuel tank so that the rust should not disturb us.
But i was forced to replace the tank and i was not willing to put a kabli one of same model.
So i decided to put a new zero meter fuel tank of cultus 40L capacity, now im a tension free man.
I also changed the location of my fuel tank which can be seen in below pics.