Samsung i5500 Microphone Pad Ripped Off

Hi guys,
I am a hobbiest that tried to replace the microphone on the i5500.

I applied amtech flux onto the microphone and heated the microphone using a Hot Air Station at 300*C for 15 seconds. Once I removed it I noticed that most of the pads were missing. I do not know what to do now.. Any Ideas :/

imgur(dot)com / E5YyAG1