If you want to remove some solder,here is a tool you should have one-L135A Desoldering pump , which I call  “Time machine” .

This Desoldering pump is made of iron and  plastic,really tough design.You can easlily undo your soldering with that,  give your board another shot.


See the picture above? It works like a “Time machine”, makes your board goes back to the past.^^

Click for more information