Most likely thermal adhesive or thermal glue was used to allow the heatsink to bond to the processor.

Yes the battery is replaceable, but not the memory and processor unless you replace the entire board these are located on.

I just took my friend advice and went over the piece for a few seconds on the lowest setting. However, when I got it back together I realized I was missing the piece between the digitizer and the frame, which is the plastic digitizer frame bezel. Now I have to wait for that to arrive, so I keep everyone here posted as to how it turns out. I could try it without it, but I left my charger at a friends house, so until i get it back there nothing I can do to make it turn on because the battery is dead.

Also the Temporary Product Data Sheet says:

Hot Splicing (BTM 220) In excess of 170 Degress C (338 Degrees F) (test program on-going)

1 k/sq in (1.25 Kg/230 mm x 25 mm test area),

overlap shear, held for 60 seconds

However, does this mean this is the temperature I should melt it at or set my heat gun to. What does this mean?

I choose 3M double sided adhesive and the operating temperatures are as follows:

Operating Temperature Range (Celsius) Long Term (Days-Weeks) 90 Degrees C (194 Degrees F)

Operating Temperature Range (Celsius) Short Term (Minutes-Hours) 120 Degrees C (248 Degrees F)

A non-digital heatgun has a minimum temperature of 750 Degrees F and a maximum of 1000 Degrees F, which is obviously to hot even if you can increase the range to reduce temperature. The digital heat gun I bought has a miminium of 250 Degrees F and a maximum of 1350 Degrees F, but is that still to hot or is the lowest setting just about right.