no solder paste needed just flux there is enough left on chips from old board
![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif)
And it is doable with a heat gun i have use that and my ir rework both work fine just need to be careful with heat gun not to blow surrounding caps away
![Grin](https://bitcointalk.org/Smileys/default/grin.gif)
This would make a neat DIY project. I plan to order the boards and give it a go. Any additional last minute advice. And like I said its been a very very long time I've don't any kind of soldering.
![Cheesy](https://bitcointalk.org/Smileys/default/cheesy.gif)
This does sound like the best option. Let us know how it goes!
Keep some extra flux around, and be patient. It can take a little time for this style of chip to loosen up, expicially if they were made RHoS compliant (the solder for that requires more heat, and releases a little less smoothly.)