Was just too busy to post anything here. Wanted to post lots of updates, will do it in a day or two.
Water seeping problem has started again. Tried to check again yesterday evening and it seems that most probably its coming through the place behind dashboard (right most side). I tried to check the place just behind the lever (the one that we have to pull) for opening the bonnet. It was pretty wet there hence I feel that the water might be coming in from there.
I guess I will have to check below the wiper (right one), may be the water is not flowing down completely. Will post an update soon.
Another interesting this is that the right side mat of the middle seat is also wet, though its dry below driver's seat. So wondering if the water is also coming through middle door's beading as well. Or in worst case, if its coming from below (the vehicle), though this doesn't seem logical.
Whatever the case may be, I have decided to find out and fix this problem myself this time. Cannot continue this way any more.