Salaam !
I am from Karachi, my Honda City Vario Wind screen has many scraches and I am willing to replace it.
But, I m some afraid about it, as, a couple of years back, I changed my Mehran Car WindScreen and it goes Leak in rains.
I went to wind screen fixers, and they said its normal and usually it goes to leakage 
Why leakage, if fixing is good ????? and what points to be remember when going to fix it. ???
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Now, Kindly advice, who is the best Wind Screen Fixer in Karachi ???
(Jis kay haath main Safai ho / Kaam main safai ho) ??