Just want to confirm what variant is your controller. The "pre-production" models that were sent to Casey Nutsack and NFiJustine had removable controller sticks. Most users have reported that there sticks are NOT removable. Majority of these users had the 'fly-less' combo. A recent user just posted (cant find post) that his fly more bundle controller sticks was detachable (as stated in the manual). I'm just curious whether a particular variant in controllers relate to the MECH ERROR issue and causing Mavics to randomly spin out of control. Edit: found the link Can't remove controller joysticks?