hii buddy,
U asked about dealers of our products in mumbai. Yup its in Nerul, J.D.Friends, in Chandrapur, JAI MAHA KALI AUTO PARTS.
Nr. Biyani Petrol Pump.
If there is too much water in the tank then it must be opened and all the water+petrol would need to be drained completely. If there is very little water then it will pass out dont worry about it.
I would not advise changing the P220 Fi to Carb, as the carb is not as much fun as the Fi. Why do you want to change it anyways?