2009 S40 Sunroof Leaks

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I bought my daughter a 2009 S40 and shortly after purchasing it I found there was a leak in the sunroof. I had the drain tube repaired and thought I had the problem fixed. It still leaks, not as much, but still leaks after this repair. I took it to the local Volvo dealership to see what could cause the leak and they said it was the "well", where the sunroof slides back into when the roof is open, was cracked and had to be replaced, for $2,100! Any help or suggestions as to where I can purchase the "well" or other potential solutions?