Light and Proximity Sensor not working

I have had some water damage done to my phone and used my screen (front panel) with a friend's back panel, or body, who shattered his screen. Everything is working great, but the light and proximity sensor is not working at all and I keep hitting mute with my face. I have put the #3 cable back in sever times making sure flip the clip up and down and seem to have it all of the way inserted. It seems that the only way to get the metal case over cable 3, the proximity sensor off is to remove the glass, which id like to not do. Is there anyway to do this without taking off the glass? Thanks

I did have to remove the LCD screen but not the glass front; I'm not sure which one is considered the digitizer. You can gently pry the sensor housing away from the frame and replace the sensor strip.

Check out this video on YouTube:

http://www.youtube.com/watch?v=m-wjCFGW4...

I was able to replace just the proximity sensor in about 30 minutes, without special tools, and for under $10. I don't feel like the whole front assembly would be much easier and costs about 10 times as much. If you don't get the proximity sensor working for some reason, then you could go ahead and get the whole front assembly, but I did not because I thought $100, was too much to spend for a small repair.

Shopping results:

http://www.google.com/products?q=iPhone+...