Il Mio Problema
Yoga 2 Pro's have bad WiFi Cards, upgrading to AC fixes many other issues.
La Mia Riparazione
It was so easy, the iFixit toolkit had the exact bits I needed. Then the next stop was the fans, $8 on ebay vs a new laptop! Fans replaced, laptop way better.
Il Mio Consiglio
The ProTech Toolkit does not have a sim tool. Went looking for one thinking 'of course it'll be in my new tech focused tool kit' ... but no. No sim tool. :(