I'm busy rebuilding a customers Discovery Pro and they decided to try new motors and esc's because the TBS 900kv's are out of stock. We settled on Lumier 900kv motors and the Castle 35amp quad pack. Those are the only parts replaced. We have build a ton of Discos with the exact same gains and they fly great. Now for some reason the Naza v2 has a significant yaw wobble. I've tried yaw gains from 60-150 with no luck. End points are set properly (castle esc's don't/can't calibrate). Any ideas???