Here is the video:
This is only for alpha, release version do not need such fix
Thanks for my teammate WuTong, this video looks so professional. And special thanks for my friend Alex helped to make this video.
Some notes from WuTong:
1. Better to have a tip iron, that will help a lot.
2. Better to have this tool to keep it in position.
PS: in the package there are are some resistors, four 154Kohm and four 158ohm, those are useless now, just ignore them.